Sophia Putney-Wilcox is excited to start her senior year of high school after ending an abusive relationship with her boyfriend, Adam; unable to take the rejection, Adam breaks into her house with a bottle of gasoline and a lighter.

When a single mother breaks up with her volatile boyfriend, she finds out he has other plans for her; armed with a gun, he holds her hostage; as her life hangs in the balance, she has no idea her friend on the SWAT team is determined to save her.

After a family man is found discarded alongside a rural road, police learn the brutal murder took place in his home while his children slept; chilling suspicions and rumors about the family become reality as a deadly betrayal is revealed.

When a single mother breaks up with her volatile boyfriend, she finds out he has other plans for her; armed with a gun, he holds her hostage; as her life hangs in the balance, she has no idea her friend on the SWAT team is determined to save her.

Living with her mother, sister and grandmother, Catherine dumps her drug-using boyfriend, Shane, who breaks into her home and takes everyone hostage; Catherine hides behind a shower curtain for five hours not knowing how the deadlock will end.

A young husband is shot dead in his Morris, Ala., home, and police initially believe it's a robbery gone awry; when the town rumor mill swirls to life, authorities uncover a dark secret hiding between the pews of the local Baptist church.

Three teens vanish, and a Texas town's worst fears are realized when they're found dead; details of a related robbery identify a suspect, but after a rattling jailbreak, the city must mobilize the largest manhunt in state history to nab the culprit.

After Allison Walker mysteriously goes missing just days before Christmas, investigators scour her pig farm in Adairville, Ky., in search of clues.

A picture-perfect dinner for two dissolves into a nightmare for college sophomore Dominique Nicky Hurd and a fellow classmate after they become the targets of a deranged predator.

In an Oklahoma town, Amanda Burney and her fiancé, Ethan Walton, run an errand that turns into a run for their lives.

When 31-year-old Ashley Young doesn't call her mom for days, her family and friends fear for the worst; when a 911 call triggers a basement discovery, those fears come true.

In rural Pennsylvania, a young family discovers a mysterious skeleton buried in their basement; archeologists come in to identify the body, uncovering the truth about a decades-old missing person's case and a family secret.

In 1998, new homeowners renovating their basement, discover a body; as police investigate, they learn it belongs to teenager Christopher Denoyer, who was reported missing by his family in the 80's.

A town in Michigan becomes scandalized when a partially nude corpse turns up; police sift through lies and alibis as they search for the killer.

The town of Higginson only has two full-time police officers, and one is gunned down while on duty.

A roommate reports 22-year-old Liz Syperda missing, shocking the community of Mount Pleasant, Iowa; some wonder if Liz merely left town without telling anyone, but family and friends know something far more disastrous occurred.

After James Skinner turns up dead in his own bedroom, the agricultural community of Brownstown, Ill., enters into a paranoid spiral, unsure who would want to kill this beloved local rodeo rider and cattle rancher.

When Debra Davis' husband excoriates her for refusing to experiment sexually, she thought there was something wrong with her, never suspecting her husband's perversions are signs of something evil deep inside him.

When Elizabeth Flores was a child, her sister, Louise, tried to shield her from a horrible family secret; when Louise met David Turpin, that all changed.

Timothy Bass had gotten away with murder for decades, telling his wife, Gina, that he enjoyed working the night shift to make extra money; Gina believed him until she uncovered his secret and was left wondering what evil her husband had done.

After finding her name on a bullet, a woman fears her son has lethal plans.

The lives of a beautiful young family in Long Beach, New York, rip apart when five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death; to Audrey's horror, her mother's murderer is somebody very close to home.

On New Year's Eve, Tara Gillon's father finds her murdered in her Massachusetts home; one missing shoe -- the right fit could catch a killer.

Delve into the psyche of America's notorious serial killers.

A graduate student calls 911 to say she just shot her boyfriend, a 29-year-old attorney, in self-defense; police soon discover that her story doesn't add up and realize they are face-to-face with a psychopath.

On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

Delve into the psyche of America's notorious serial killers.

A graduate student calls 911 to say she just shot her boyfriend, a 29-year-old attorney, in self-defense; police soon discover that her story doesn't add up and realize they are face-to-face with a psychopath.

On a dark and stormy night, police find a family dead in their mansion; a bloody mask lies nearby; a letter to the victim's mother hints at something darker than murder-suicide.

The lives of a beautiful young family in Long Beach, New York, rip apart when five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death; to Audrey's horror, her mother's murderer is somebody very close to home.

On New Year's Eve, Tara Gillon's father finds her murdered in her Massachusetts home; one missing shoe -- the right fit could catch a killer.

Shortly after 30-year old Katrina Smith vanishes, investigators discover her abandoned car as well as security footage of a stranger walking alone the night she went missing; soon, secrets will be unearthed and suspects will emerge.

When an expectant young mother gets caught up in a complicated love triangle, emotions run high and heartbreak leads to murder; as suspects surface one by one, investigators must dig deep into the past to determine who actually committed the crime.

A man calls 911 with his dying breath, and first responders arrive to find him brutally murdered and stabbed 59 times; when detectives question his best friend, they uncover a tangled story of deception and jealousy that ends in psychopathic rage.

A girl disappears after school and her last known steps are caught on surveillance cameras; these cameras lead investigators to two dark minds that carefully plotted one of the most sinister, depraved crimes imaginable.

An unapologetic 14-year-old boy confesses to the murder of his best friend; twelve years later, he is back in court with a chance at a reduced sentence.

A troubled 29-year-old son is kicked out of his parents' house after spending the family fortune on a web-cam model; his mother, father and brother are found murdered, the young man insists he's innocent.

A woman finds her elderly brother dead in his bedroom with his throat slashed; uncovering the truth poses a challenge for detectives, as the individual responsible for killing him is a manipulative psychopath who craftily deflects blame.

A lone gunman shoots a young man and woman on their way home from the gym where they work; while interrogating a suspect, detectives learn that this is no random attack but the twisted plan of a deranged psychopathic stalker.

When a beloved grandmother is found stabbed to death in her home, Joe Kenda must turn to a grief-stricken community for help; after 12 years of searching, Kenda finally uncovers the fiendish plot to exploit the helpless victim.

When a drunken dispute at a biker bar turns deadly, Kenda must launch a manhunt for a pair of suspects who flee with a small boy in tow; a man is murdered in an onslaught of high caliber gunfire, but an unexpected break turns the case on its head.

On the night before Halloween, a real-life nightmare unfolds as a young man is found clinging to life; the case takes a dark turn after Lt. Joe Kenda learns there's a second victim somewhere in the woods.

Alisha Bromfield's supervisor, Brian Cooper, promotes her to team leader, but his motives are not entirely pure; Bromfield stands her ground, letting Cooper know she doesn't want a relationship beyond a professional one.

An illegal insurance scam leads to the destruction of an entire family.

Sandra Berfield suffers years of harassment from coworker Steven Caruso and has him jailed for violating a restraining order; released, Caruso sends a pipe bomb to Berfield who is killed instantly after picking up a package left on her front porch.

Bob Peterson invites himself over to his co-workers Gene and Jaye-Jaye Thurnau's new home to give them a housewarming present; later, Jaye-Jaye leaves the guys alone to run an errand, during which time they vanish.

In the summer of 1980, a popular teen goes for a run around her hometown in Maine and, days later, her savagely beaten body is found; what happened remains a mystery for years until her mother intervenes and forces police to re-examine the case.

In 1992, a 19-year-old woman is brutally assaulted outside of Desert Hot Springs, Calif.; miraculously, she escapes but lives in constant fear that her assailant will find her again one day, not realizing she has survived a serial killer.

On June 6, 1992, Suzie Streeter and Stacy McCall attend parties celebrating their high school graduation; by morning, the teenagers have gone missing, along with Suzie's mother, Sherrill Levitt; the case leads police on a nationwide search.

In the summer of 2000, bags full of body parts start appearing all over the San Francisco Bay Area; investigators follow the trail of grisly clues to a secret cult carrying out a sinister scheme.

Aspiring influencer Gabby Petito sets out on a cross-country road trip with her fiance, but she disappears, and the ensuing mystery goes viral; new evidence sheds light on the personal and financial struggles that led to the tragic outcome.

A series of non-fiction investigations that explore such themes as jealousy, murder and deceit.

Elizabeth Chambers unravels the deception and manipulation that leads to the bloody ending of Kelly Sutliff's marriage, but a vicious attack is only the start of Kelly's nightmare; living in fear, Kelly turns to an unlikely source for protection.

When Angie meets Joe, her family and friends aren't sure what to make of their relationship; the couple marry and have kids but soon Angie becomes isolated from her loved ones and trapped in a spiral of abuse that ends in an horrific triple homicide.

A series of non-fiction investigations that explore such themes as jealousy, murder and deceit.

Elizabeth Chambers unravels the deception and manipulation that leads to the bloody ending of Kelly Sutliff's marriage, but a vicious attack is only the start of Kelly's nightmare; living in fear, Kelly turns to an unlikely source for protection.

When Angie meets Joe, her family and friends aren't sure what to make of their relationship; the couple marry and have kids but soon Angie becomes isolated from her loved ones and trapped in a spiral of abuse that ends in an horrific triple homicide.

Aspiring influencer Gabby Petito sets out on a cross-country road trip with her fiance, but she disappears, and the ensuing mystery goes viral; new evidence sheds light on the personal and financial struggles that led to the tragic outcome.

Stephanie Shea Graham, 20, is found murdered on a desolate road; detectives gather clues and question suspects, and when the truth is finally revealed, the identity of her killer will prove to be more shocking than ever imagined.

Firefighter William Walker and his new wife, Uloma, live in a tight-knit Cleveland neighborhood, then he is gunned down in their driveway, turning everyone in his life into a suspect.

On the frontier, a neighbor's dog frightens the other's daughter and grandson, resulting with an all-out war that will leave one of them shot dead and the other in a white-knuckle standoff with police.

In a tight-knit community, a new family commits a slight against a community member causing all of their neighbors to turn against them and leading to an explosive conclusion.

Bereaved over the loss of their son, a couple is thrilled when a family with two boys moves in across the street; however, the relationship soon sours, engulfing all of them in a conflict that ends in a deadly shooting.

When new mother Sara Raras is found brutally murdered, the investigation quickly focuses on her violent, estranged husband, Alberto; then, a jailhouse snitch shares new information pointing to an unlikely suspect with an odd motive for murder.

Yvonne Oulton's husband and son discover her dead in her minivan; detectives work around the clock to catch Yvonne's killer, until they figure out that everything they've been led to believe about her life is a lie.

Brandon Horst and Heather Schwarz are former high school sweethearts who reunite after Brandon's tour of duty in the Middle East; when they struggle to have a child, the pressure leads to secrets, affairs and deceit, leading to a diabolical homicide.

A high school teacher stages her husband's murder to cash in on his life insurance; a woman takes measures to eliminate her lover's wife and child; a serial monogamist grows tired of her fourth husband.

A highway patrol officer takes her dangerous temper out on her husband; a protective mother becomes overwhelmed with jealousy over her son's new girlfriend; an unhappy housewife recruits her children's aid to kill her husband.

Crime experts explore the motives and modus operandi of female killers; while males are often driven by anger, impulse and destruction, women usually have more complex, long-term reasons to kill.

Crime experts explore the motives and modus operandi of female killers; while males are often driven by anger, impulse and destruction, women usually have more complex, long-term reasons to kill.

Las Vegas is a playground for top female fitness competitors; winning is important, and when jealousy spirals out of control, one woman loses her life.

In the agrarian world of Marathon County, Wisc., the only girl more popular than a homecoming queen might be a 'dairy princess'; when one is found murdered, investigators dive deep into a pool of suspects, from strangers to frenemies.

Christa Pike is the only woman on death row in Tennessee; in 1995, she is introduced to Satanism, and her fascination grows until it comes to a deadly head in the woods one night in January.

At the cookie factory, friendships rise fast but so do rivalries; what starts as harmless gossip between co-workers soon turns sour; when jealousy and ambition boil over, the sweet life at the plant ends in cold-blooded murder.

Corey Breininger, a 10-year-old, shoots his father in a tragic accident, but years later, Corey reveals all is not what it seems; with extraordinary courage, he recounts the truly harrowing story of the sinister role played by his scheming stepmom.

Featuring stories of American mothers and their children who conspire to murder.

Veteran detective Sandra Brown explores Silicon Valley's shadows, where killers and coders are sometimes one and the same and staying on the cutting edge carries a deadly price as ambition drives some to murder.

When a resident revives an HOA to beautify her community, some neighbors are unhappy, believing the organization is fraudulent; tensions escalate when liens are placed on the house of a couple unwilling to pay, ending in a suburban shootout.

Featuring stories of American mothers and their children who conspire to murder.

Veteran detective Sandra Brown explores Silicon Valley's shadows, where killers and coders are sometimes one and the same and staying on the cutting edge carries a deadly price as ambition drives some to murder.

When a resident revives an HOA to beautify her community, some neighbors are unhappy, believing the organization is fraudulent; tensions escalate when liens are placed on the house of a couple unwilling to pay, ending in a suburban shootout.

Corey Breininger, a 10-year-old, shoots his father in a tragic accident, but years later, Corey reveals all is not what it seems; with extraordinary courage, he recounts the truly harrowing story of the sinister role played by his scheming stepmom.

In Pueblo, Colo., police are called to a horrific scene where a fire reveals the charred remains of a body; as detectives work to track down the killer, their investigation uncovers cracks in the foundation of a large, multi-generational family.

A frantic 911 caller informs police he's found a family member dead; at first, it looks like a case of suicide, but a deeper dig reveals a secret world of sex tapes, broken promises and unfathomable motives.

Ian and Nancy Blackburn's lifeless bodies are discovered stuffed into the trunk of their own car; the investigation unmasks a monster who hides in plain sight.

Shauna Howe, only 11 years old, disappears as she returns home from a Girl Scout Halloween party; when Shauna's body shows up in a local creek, her murder ignites an investigation whose conclusion sends a shockwave through her community.

When a bag containing body parts washes up on the shore of the lake, the search for missing 10-year old Holly Jones becomes a grisly murder investigation; police race to find the perpetrator before another child is murdered.

A dog walker discovers the body of a young man who is dead from a single gunshot wound; the case goes cold for 13 years; now, the team thinks time and maturity may be exactly what they needed to get a witness to talk.

A distraught woman calls 911 to report that her husband has taken his own life; a discovery made by a mortician leads detectives to suspect murder; with time lost, J.B., Pamela and Joe collect evidence and dig into the couple's not-so-perfect life.

Two unrelated murders are traced to a violent pair of siblings, and investigators are led on a wild goose chase, starting in Texas but then spanning across two countries.

When a 5-year-old girl describes her mother's killer as being a ninja, police puzzle out the truth behind the child's description as they put the murderer behind bars.

In North Carolina, a young woman's killer keeps police guessing until he slips up and finally gives them what they need to put him behind bars.

In Santa Monica, Calif., a man who killed an art teacher remains at large for years as police use every trick in the book to hunt him down.

After a well-liked teenage boy is found stabbed to death in his Salt Lake City home, detectives leave no stone unturned in their quest to solve the murder that rocked this tranquil community.

In Prichard, Ala., loving father Re'Mano Campbell is found murdered in his home; it takes the cunning wit of local investigators to unravel the mystery of who murdered him.

Lyle and Carol Kopenskey are high school sweethearts who marry after graduation; after 40 years of marriage, one of them becomes involved in an extra-marital affair that leads to cold-blooded murder.

After losing her husband in a tragic accident, a God-fearing Cindy McKay claims she has to bend the law to pay off his illicit debts; authorities soon realize that Mckay is a criminal mastermind.

After Cynthia Roth drowns in the middle of a crowded lake, investigators uncover a decades-long trail of terror; detectives must take extraordinary measures to catch the killer.

Three hostages, two shoot-outs and one murder take place in a Bakersfield, Calif., cabin community; Benjamin Peter Ashley, an unpredictable and violent outdoorsman, leads investigators down his path of devastation, resulting in an 18-day manhunt.

Small suburban towns across America have been torn apart by murder; in a single night, quaint residential Elm Streets can descend from peace and tranquility into horror, senseless death and tragedy.

Whispers of missing women, unsolved attacks and a faceless monster haunt a quiet town, and after a shocking breakthrough, investigators realize that the killer never left.

A teenager's spring break getaway to Myrtle Beach turns into a mystery that grips the nation; sneaking off without her parents' permission, she vanishes into the night, leaving behind a trail of cryptic clues.

Small suburban towns across America have been torn apart by murder; in a single night, quaint residential Elm Streets can descend from peace and tranquility into horror, senseless death and tragedy.

Whispers of missing women, unsolved attacks and a faceless monster haunt a quiet town, and after a shocking breakthrough, investigators realize that the killer never left.

A teenager's spring break getaway to Myrtle Beach turns into a mystery that grips the nation; sneaking off without her parents' permission, she vanishes into the night, leaving behind a trail of cryptic clues.

Three hostages, two shoot-outs and one murder take place in a Bakersfield, Calif., cabin community; Benjamin Peter Ashley, an unpredictable and violent outdoorsman, leads investigators down his path of devastation, resulting in an 18-day manhunt.

Robin Sowders is brutally beaten in his home in Bloomington, Ind., and later dies from his injuries; when his wife turns up at the police station, the investigation gets turned on its head; only a wiretap reveals the truth.

Melissa Atkin is found bound and murdered in her home in Smyrna, Tenn.; the investigation zeroes in on two individuals and involves a series of recorded phone calls exonerating one of them, whilst incriminating the other.

A beauty stylist is almost murdered in 2016 by a client who comes to her home and poisons her with a piece of cheesecake; the motive doesn't make sense to police until they realize that the stylist and the client have an uncanny physical resemblance.

When a young woman is found dead in her car, her husband claims she took her own life, but there are two bullet wounds in her head.

The roommate of murdered Hollywood family therapist Amie Harwick shares his story for the first time about how he tried to save her the night of her death.

A wrestling dynasty with six brothers, five of whom end up dead at a very young age; only one remains to tell the tragic story of fame, addiction and unusual characters behind this family business that turned into a family curse.

A wrestling dynasty with six brothers, five of whom end up dead at a very young age; only one remains to tell the tragic story of fame, addiction and unusual characters behind this family business that turned into a family curse.

Teenage film reviewer Trey is building an online empire, attracting hundreds of thousands of views; but, it can't last, and soon, he finds himself dragged into a world of guns, abuse and revenge.

Anime-obsessed teenager Bianca becomes an inspiring mental health advocate online and changes lives; but on forums and social media accounts, she discovers a horrifying and violent underbelly: young men primed to threaten, harm and attack.

Self-styled Instagram sex and fitness guru Ash builds a life in the glitz, glamor, and excess of Las Vegas; but the wild ride ends when he becomes entangled with a lonely Sin City resident who he comes to believe holds a dark energy inside.

After a teenage house party spirals out of control, a shocking photo goes viral around the local schools; a vicious campaign of cyber bullying ensues that drives an innocent girl to take desperate action.

Sixteen-year-old Angela Allen meets a man online, exchanges text messages with him and agrees to rendezvous with him in person, after which she is never seen alive again.

Dallas teen track star Shania Gray is left traumatized after being raped while babysitting; when a new social media friend offers support, she opens up to him, leading Shania into a trap that ends in tragedy.

College freshman Jason Rodriguez finds freedom online when he begins dating several young women who pique his interest, then he turns up dead after agreeing to meet one of them in person.

On a Mississippi back road, a 19-year-old woman is set on fire and left to burn alive; her last words lead detectives down a road of dead ends and the case goes cold until a special agent taps into her location data and finds a suspect.

Laura Simonson, a 37-year-old loving mother from Farmington, Minn., is left devastated by the death of her teenage daughter, and she seeks comfort in the darkest corners of online dating and meets the man who seals her fate.

Veteran detective Sandra Brown explores Silicon Valley's shadows, where killers and coders are sometimes one and the same and staying on the cutting edge carries a deadly price as ambition drives some to murder.

The murder of a radio host uncovers a tale of love and deceit.

Laura Simonson, a 37-year-old loving mother from Farmington, Minn., is left devastated by the death of her teenage daughter, and she seeks comfort in the darkest corners of online dating and meets the man who seals her fate.

Veteran detective Sandra Brown explores Silicon Valley's shadows, where killers and coders are sometimes one and the same and staying on the cutting edge carries a deadly price as ambition drives some to murder.

The murder of a radio host uncovers a tale of love and deceit.

On a Mississippi back road, a 19-year-old woman is set on fire and left to burn alive; her last words lead detectives down a road of dead ends and the case goes cold until a special agent taps into her location data and finds a suspect.

When dozens of women vanish from the Sunshine State in the late '60s, the get filed as presumed runways; police discover the bodies of two missing teens, uncovering the sadistic work of a prolific serial killer.

The decomposed body of a San Francisco businessman is found floating in the California Aqueduct; investigators initially suspect a family member, but without evidence, the case goes cold; it takes detectives several decades to find the real killer.

A brutal murder rocks a close-knit trailer park community in Kansas City, Kan.; with a 19-year-old female on the run, detectives begin to suspect that a family fight may have taken a deadly turn.

A quiet neighborhood in Kansas City, Kan. is shaken by a double homicide in a local deli, and detectives begin to wonder where the truth really lies.

The brutal murder of a young basketball player in a drive-by shooting leaves detectives with few clues about the killer, but forensic evidence could be the key to charging a suspect.

Judith Therianos is a free spirit who wants to see the good in everyone; after her body is found in a wooded area, detectives unearth video surveillance that shows her alone and unaware of the danger she faces moments before her life is cut short.

Ryne Zahner is an inspiration to his high school math students in Arizona; his friends see him as one of the nicest people they know; a hooded murderer guns him down after a night of partying and the entire community struggles to grasp his murder.

The community in Bozeman, Mont., is shocked when police officers find Lauren DeWise dead and her roommate, Ashley Van Hemert, critically injured.

In what looks like a planned ambush, a young man turns up dead in his garage in Maricopa, Ariz.; police must look into a romance gone wrong to find his killer, and the child that the two may share.

Police find a woman's corpse in flames outside of Atlanta; they use surveillance footage to learn about her last moments, including witnessing the victim getting into the car that would take her to her death and ultimately lead them to the killer.

Fear grips San Diego after police find a murdered woman's body tossed over a highway bridge. Investigators are led to a suspect that shocks everyone.

A city's worst fear comes to fruition when the body of a University of Toledo sorority sister turns up riddled with bullets on campus; the ensuing investigation's findings shock the community and test the public's faith in law enforcement.

After locals smell charred meat, police find burned remains in an abandoned mining pit in the town of Hibbing, Minn.; before they can investigate who committed the crime, they must first identity the body.

Mindy Morgenstern, a college student and waitress, is found strangled and stabbed in her own apartment; family, friends and the entire town of Valley City, N.D., help law enforcement identify the monster who committed this violent crime.

The grotesque murder of a beloved citizen, Betsy Ball, shatters the quiet farm community of Vinton, Ohio.

An inexperienced police department handles the tragic murder case of young mother Jessica Currin, leading to critical errors and false accusations; the case goes cold until Jessica's father protests the state of Kentucky to reinvestigate.

Brittany Steier devotes her life to being a mom and having a happy family; when the father of her children, Edward June Harris Jr, becomes increasingly violent and unpredictable, Brittany has to make a decision that will end up costing her life.

The lives of a beautiful young family in Long Beach, New York, rip apart when five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death; to Audrey's horror, her mother's murderer is somebody very close to home.

When Christie meets Marcus in high school, they think they've found love's young dream; as the relationship becomes rocky, Christie begins to fear Marcus's violent tendencies; little does she know, all her fears will soon become a reality.

Vincent Taylor is stuck in a controlling relationship; a knife attack results in Vincent's death.

The lives of a beautiful young family in Long Beach, New York, rip apart when five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death; to Audrey's horror, her mother's murderer is somebody very close to home.

When Christie meets Marcus in high school, they think they've found love's young dream; as the relationship becomes rocky, Christie begins to fear Marcus's violent tendencies; little does she know, all her fears will soon become a reality.

Vincent Taylor is stuck in a controlling relationship; a knife attack results in Vincent's death.

The lives of a beautiful young family in Long Beach, New York, rip apart when five-year-old Audrey witnesses her mother, Diane, brutally stabbed to death; to Audrey's horror, her mother's murderer is somebody very close to home.

The lifeless body of an unidentified woman is found in a parking lot at an abandoned factory, then Detective Rod Demery is thrown a curve ball when he recognizes the face of the victim at the center of the crime scene.

After a popular cheerleader is murdered in a hail of gunfire, Demery learns the triggerman was driven to violence by a wolf in sheep's clothing.

Andy Castillo uses the internet to call and text female realtors in 20 different states; wielding their social media against them, he makes the women believe he's lurking nearby, adding to their terror.

Online cult leader Sherry Shriner reaches her followers through YouTube videos and keeps them in line via her Facebook page; when a group member dies in a tragic shooting, attention turns to Sherry and the control she wields over her followers.

Fourteen-year-old Aubrey Peal uses an app to find others interested in gaming; he strikes up an online friendship with a man named Jason, who claims he is suicidal; concerned, Aubrey agrees to meet Jason, not realizing his evil intentions.

A high-profile Silicon Valley couple break up and begin a heated custody battle; when one parent vanishes just before a scheduled visit, police uncover a case fueled by greed, betrayal and suspects with everything to lose.

When a software consultant runs for governor in California, the Bay Area press uncovers his ties to the unsolved murder of 41-year-old millionaire David Coffin; but the candidate points the finger at a woman with whom he and the victim were involved.

Veteran detective Sandra Brown explores Silicon Valley's shadows, where killers and coders are sometimes one and the same and staying on the cutting edge carries a deadly price as ambition drives some to murder.

In Kinston, N.C., a woman finds Jack Davis in his home with a head wound; Surveillance footage from Jack's house and a nearby neighbor's leads detectives on the hunt for his violent attackers.

In Fernandina Beach, Fla., cosmetologist Joleen Cummings goes missing after an appointment, her last at Tangles Salon; CCTV footage shows her car in an isolated parking lot in the middle of the night; a closer look reveals an unlikely suspect.

After the murder of Johnny Soekhies in Alabama, authorities turn to CCTV to hunt his killer; surveillance footage reveals a vehicle driving Johnny to the place of his eventual murder and captures a glimpse of a sinister figure lurking in the shadows.

In a home in downtown Baltimore, a man finds 24-year-old father and youth worker Dion Smith executed with a shotgun. The other residents are cagey, but a suspicious visitor is singled out thanks to telling CCTV outside the victim's door.

In mid-90s Miami, a crew of bodybuilders known as the Sun Gym Gang preys on the rich to rob them blind; as their greed grows, they turn to murder, resulting in one of the goriest crime scenes in Florida history.

In mid-90s Miami, a crew of bodybuilders known as the Sun Gym Gang preys on the rich to rob them blind; as their greed grows, they turn to murder, resulting in one of the goriest crime scenes in Florida history.

Anthony Sowell charms and lures women into his modest house.

Anthony Sowell charms and lures women into his modest house.

In 1994, Lake Orion, Mich., is rocked by a murder; at first, the crime is a mystery -- but in a small town where everyone knows each other, rumors start flying; police soon expose a strange and twisted plot that no one saw coming.

Married family man Dr. Adam Frasch has a booming practice, and he loves to spend money on houses, automobiles and exotic dancers; ultimately, the doctor will reap what he sows in deceit and jealousy.

A couple moves to a quiet North Carolina town and revels in their neighbors' warm welcome; personalities soon begin to clash until one bitter argument leads to an act so terrible the community will never recover.

In Susanville, Calif., a beloved police officer is found dead in what looks like an apparent suicide, then detectives launch a full-blown murder investigation and zero in on the officer's wife as a possible suspect.

Married family man Dr. Adam Frasch has a booming practice, and he loves to spend money on houses, automobiles and exotic dancers; ultimately, the doctor will reap what he sows in deceit and jealousy.

A couple moves to a quiet North Carolina town and revels in their neighbors' warm welcome; personalities soon begin to clash until one bitter argument leads to an act so terrible the community will never recover.

Married family man Dr. Adam Frasch has a booming practice, and he loves to spend money on houses, automobiles and exotic dancers; ultimately, the doctor will reap what he sows in deceit and jealousy.

In 1994, Lake Orion, Mich., is rocked by a murder; at first, the crime is a mystery -- but in a small town where everyone knows each other, rumors start flying; police soon expose a strange and twisted plot that no one saw coming.

Obsessed with his mistress, a hard-bodied security specialist plots to murder his wife; however, his scheme, masterminded by the unlikeliest of conspirators, takes a sudden and deadly twist.

A mystery grips a small seaside town where a competitive bodybuilder's husband disappears; puzzling sightings, shocking revelations and bizarre deceptions eventually lead police to a grisly discovery.

A homicide and its disturbing details devastate a teenager's loving family, leaving a tight-knit community to wonder if their loved one could become the next victim.

The police must identify the killer of a young mother based only on her frantic words in a disconnected 911 call.

An unidentified woman is found callously murdered in an off-campus apartment; police have no leads on the case until her terrified neighbor shares a chilling story.

In Wisconsin, a K-9 saves officers' lives by taking down an armed fugitive but gets shot in the head; in Connecticut, a patrolman comes under fire during a store robbery; in Oklahoma, a head-on collision with a deputy leads to a full-scale manhunt.

In California, an argument in a bar leads to a hostage situation; in New Mexico, a shoplifter fires upon an officer before going on the run; in Wisconsin, a suspect disappears into the frozen wilderness after flipping his car.

In Ohio, cops face a hostage situation with a fugitive willing to go to extremes; in Maryland, police catch armed robbers in the act and they run from the law; in Indiana, police risk it all to save circus animals inside a burning truck.

In Vermont, a dad wielding an excavator attacks officers to stop them from arresting his son; in Wisconsin, a police pastor on a ride-along gets caught up in a high-speed chase; in an Indiana motel, a wanted man opens fire on police.

In Portland, Ore., an Iranian woman lands the perfect job with an insurance agency, but her charm and intellect make her the focus of several male co-workers; corporate intrigue turns to cold-blooded murder when she's found dead, shot in the head.

When Ashley Benson is found murdered in a trendy Portland, Ore., hotel, detectives quickly dial in on three suspects, all of whom have been romantically linked to Benson whose parents must come to grips with their daughter's secret life.

Wedding vows take on a whole new meaning when a man is kidnapped, and his wife is nearly killed by his abductor, but nothing is what it seems in this gothic tale of murder, deceit and a cover-up.

A man who calls himself The Bishop abducts a woman and holds her captive; he imprisons six women in his basement, raping and torturing them; as captives begin to die, one woman knows her only chance of survival is to escape.

In the suburbs of Chicago, a handsome man with searing blue eyes turns out to be a bloodthirsty monster hiding in plain sight and attacking young women at will; it takes decades for the survivors to discover he is a serial killer.

In 1981, two men rape and shoot a young mother and force her fiance to watch; after nearly dying, the woman learns her attackers are a pair of serial killers, who are also brothers; it will take two decades before justice prevails over the men.

In 1965, Rodney Alcala attacks a teenage girl - only to brutalize and rape her again three years later; she feels guilty when she discovers he assaulted another girl soon after - but they are merely two of this man's countless victims.

A killer stalks families across state lines, leaving horror behind; after a 3-year-old whispers Mommy's dead, police uncover a massacre on Elm Street; two boys survive; the killer must be stopped before striking again.

Delve into the psyche of America's notorious serial killers.

Whispers of missing women, unsolved attacks and a faceless monster haunt a quiet town, and after a shocking breakthrough, investigators realize that the killer never left.

Delve into the psyche of America's notorious serial killers.

Whispers of missing women, unsolved attacks and a faceless monster haunt a quiet town, and after a shocking breakthrough, investigators realize that the killer never left.

A killer stalks families across state lines, leaving horror behind; after a 3-year-old whispers Mommy's dead, police uncover a massacre on Elm Street; two boys survive; the killer must be stopped before striking again.

In 2014, the scorched remains of a house fire reveal two female victims, Robin Aldridge, 58, and her daughter, Mani, 17; when investigators dig deeper into the women's lives, they uncover a secret online relationship that led to tragedy.

When 23-year-old Whitney Bennett goes missing, her disappearance is a mystery; no-one understands why this popular young woman would leave her home or children.

A series of non-fiction investigations that explore such themes as jealousy, murder and deceit.

After a California family man vanishes into thin air, a high-speed police chase uncovers a lead that suggests he was abducted and murdered in a monstrous plot for revenge.

After the murder of a celebrity hairstylist, investigators look to his wife and ask if her alleged affair with her racquetball coach could be a motive for murder.

After Kacie Woody discovers Internet chat rooms, the popular teen has her pick of high school hunks hoping to connect; the teen is exchanging IMs with her latest love interest, when a silver van creaks to a stop outside her house.

When Ray and Marie Thornton go out for a drive in the country on Easter Sunday, they are almost chased off the road by a tailgating van and when they see the driver changing license plates and dumping a bloody sheet, they call police.

Dawnia Dacosta attends nursing school, works the late shift and goes to church for evening services; one night she runs out of fuel and walks to the nearest station; then a man in a van offers a ride back to her car.

In financial trouble, a woman rents out rooms in her home to two men, which leads to a toxic mix of misgivings, madness and murder.

Two old friends reconnect when they end up renting a house together from an absentee landlord; familiarity quickly turns into frustration, and an abusive relationship escalates to a violent death.

Two college students rent an apartment off campus together, but the two women couldn't be more different; squabbles escalate into an all-out war, and the presence of a boyfriend causes the feud to boil over into a deadly fight.

Two women strike up a fast friendship and move in together; a lack of privacy and a secret relationship rips apart the harmony; a battle for control ends in murder.

Two members of a prominent family are murdered in Arkansas, and a teenager is arrested; for 24 years, one woman believes the teen is innocent.

The murder of James Byrd, Jr. throws his family into turmoil as law enforcement investigates one of the most gruesome hate crimes in U.S. history.

When a widower and father of three is found murdered outside his Long Island home, police have reason to look into shady business dealings as a possible motive; then, a tip leads to three unlikely suspects, exposing dark family secrets.

A teen mysteriously vanishes after a strange night with friends.

When Abbi sees her boyfriend's darkness, she tries to help but cannot; she hopes being a father will change him, but it doesn't; when his cruelty becomes too much to handle, she leaves and discovers who her boyfriend was all along.

A series of non-fiction investigations that explore such themes as jealousy, murder and deceit.

Elizabeth meets with the Harris family to investigate the tragic loss of their beloved daughter, and sister, Sarah; what was supposed to be a routine dental visit for Sarah turned into a toxic and dangerous relationship with a well-respected surgeon.

Jenny and Mike are teen sweethearts but after marrying, Mike begins a campaign of control and violence against his wife and children; just as Jenny plans to escape her living nightmare, Mike finds out and decides he will do anything to stop her.

A series of non-fiction investigations that explore such themes as jealousy, murder and deceit.

Elizabeth meets with the Harris family to investigate the tragic loss of their beloved daughter, and sister, Sarah; what was supposed to be a routine dental visit for Sarah turned into a toxic and dangerous relationship with a well-respected surgeon.

Jenny and Mike are teen sweethearts but after marrying, Mike begins a campaign of control and violence against his wife and children; just as Jenny plans to escape her living nightmare, Mike finds out and decides he will do anything to stop her.

When Abbi sees her boyfriend's darkness, she tries to help but cannot; she hopes being a father will change him, but it doesn't; when his cruelty becomes too much to handle, she leaves and discovers who her boyfriend was all along.

A crime caught on tape shows Hasidic landlord Menachem Stark in the fight for his life, and when his body is found the next day the NYPD starts on the hunt for his killers -- leading them to secrets about the beloved Brooklyn landlord.