Mystery shrouds a San Diego exotic wildlife park when one of its valued employees goes missing; as the search for Denise Vasseur intensifies, investigators fear that the most dangerous predator at the park may not be an animal.

On a June morning, a cleaning lady finds property manager Melinda Schaefer stabbed to death in her ransacked office.

Caroline Nosal, a 24-year-old grocery store worker, befriends co-worker Christopher O'Kroley, but she soon complains to store management about O'Kroley's behavior leading to a tragic outcome.

Jennifer Teague, 17, goes missing, and her body is later found dumped near a secluded parking lot; Detective Greg Brown turns to the townspeople in Teague's community to help him find her killer.

A young woman and her 12-year-old son are brutally assaulted and strangled to death in a quiet New Brunswick town; it's a true whodunit and an intensely personal case for Detective Gerry Belliveau.

Travis Spencer thinks that the cruel pranks played by his older brother, Timothy, were ultimately harmless; it turns out that older brother Timothy is using younger brother Travis as practice for a gruesome future.

It has been more than 25 years, yet Joyce Alexander is still terrified of her son, William Patrick Alexander; she fears he holds her responsible for his horrifying crime, and is convinced he is plotting his revenge from prison.

It never occurred to Shirley Gaskins that the father she adored could be one of the most prolific serial killers in America, but the more people vanished without explanation, the harder it was to deny.

When 20-year-old Cindy Sumner vanishes in Toledo, Ohio, a cryptic message lures detectives to Elm Street; in the decaying warehouse ruins, they uncover signs of a twisted obsession and a nightmare that blurs the line between fiction and true evil.

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.

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.

When Alessia Mesquita reconnects with her childhood crush, Rashod Newton, the couple fall desperately in love; when the romance becomes overshadowed by Rashod's behavior, Alessia has to make a decision that will have deadly consequences.

Tina Swor and partner John Dalton start a new life in Spirit Lake, Idaho; John's erratic behavior and love of guns plague the couple's fresh start; when Tina's best friend doesn't see her for days, she decides to call the cops.

Michelle Rogers and Matt Terry are together and share a son, Matt, but he has a dark side that comes out when he drinks; his rage explodes, leaving Michelle fighting for her life; Matt serves prison time, but tragedy strikes again when he gets out.

India Mackey live streams her life for all to see, but behind her smile on camera, her relationship with her boyfriend Kevin Dixon is painful; a day after her 20th birthday, India learns what her boyfriend Kevin can do.

Barbara Pacheco spends years building both a family and a successful career; when the father of her children, Aldo Pacheco, becomes increasingly violent and unpredictable, Barbara is forced to make a decision that will end up costing everything.

David Sumney Sr. and his wife, Margaret, devote their lives to spoiling their only son, David; however, everything comes at a price, and when his parents divorce, David Jr.'s anger escalates, resulting in the deadliest of sins.

There's nothing Brian and Cheri Hartman won't do for their only child, Scott, including helping to raise his kids after a divorce; Cheri and Brian dote on their grandbabies, and the close-knit family thrives until a betrayal changes everything.

Laurie Bursey spent her life searching for happiness; after two marriages and three children, she thinks she finally found it in southern trucker Kurt Bird; but, a violent abuser lurks behind Kurt's bad-boy swagger, and happiness soon becomes fear.

Three friends arrive for a haircut - only to find their barber dead, his body sprinkled with a mysterious white powder; as police dig in, one clue stands out: he'd just come into money; was it a robbery - or a betrayal by someone he never saw coming?

With access to hundreds of pages of police and FBI interview transcripts and personal testimony from family, friends and survivors, the story of how Jeffrey Dahmer went from shy adolescent to a notorious serial killer and cannibal is revealed.

After a call on Friday the 13th, José Herran vanishes; when investigators dig into the town he disappeared into, they uncover something monstrous; fear is currency, pain is ritual, and some visitors never leave; horror here doesn't hide - it thrives.

With access to hundreds of pages of police and FBI interview transcripts and personal testimony from family, friends and survivors, the story of how Jeffrey Dahmer went from shy adolescent to a notorious serial killer and cannibal is revealed.

After a call on Friday the 13th, José Herran vanishes; when investigators dig into the town he disappeared into, they uncover something monstrous; fear is currency, pain is ritual, and some visitors never leave; horror here doesn't hide - it thrives.

Three friends arrive for a haircut - only to find their barber dead, his body sprinkled with a mysterious white powder; as police dig in, one clue stands out: he'd just come into money; was it a robbery - or a betrayal by someone he never saw coming?

Three women die of the same mysterious illness, and the hunt is on to prove their deaths were no accident; investigators don't realize they're being played for fools by a sinister killer lurking undetected.

In Garden Grove, Calif., 19-year-old Jose Najera sneaks out of his parents' house to attend a late-night party, then he returns home to find both parents dead on their bedroom floor.

Twelve-year-old Garrett Phillips is brutally attacked while home alone; his killer jumps unseen from a window, and investigators are left with a vexing mystery that rattles the otherwise peaceful village of Potsdam, N.Y.

A woman vanishes while driving on I-95 in Florida; her divorce leads police one way, then her body is found, suggesting a different more horrible path; another woman reads about the case and has a hunch she knows the killer.

After a paramedic is found dead and covered in paint in the basement of her Massachusetts home, investigators work tirelessly for 18 months to find the person responsible.

Sometimes beauty can mask the ugliest of truths.

Jackie Spaulding takes lethal measures to get her money back; Lucille Miller realizes she's the sole beneficiary of her husband's life insurance policy; Julie Dixon makes sure her partner will never find out about their company's bankruptcy.

Paige Conley turns to drugs and alcohol following her parents' divorce and takes her anger out on her mother; Becky Reid is volatile and violent behind closed doors; Katie Coursey unleashes drug-fueled rage on the one person trying to protect her.

Stunning actress Victoria Vetri becomes Playmate of the Year in 1968; just a year later, followers of Charles Manson brutally murder her close friend Sharon Tate; the crime sets in motion a series of events that ends in Victoria's tragic downfall.

Fresh from a breakup, a Playboy casting assistant revels in the L.A. nightlife scene until a wild night out ends in her mysterious death.

Jill Ann Spaulding dreams of becoming a Playboy model; however, when she arrives at the mansion, she discovers that fantasy and reality are vastly different; shunned by Hef, Jill writes a tell-all book.

Panic spreads at the Suncoast Playboy Club when an aspiring photographer turns up brutally murdered right after shooting the annual "Bunny of the Year" contest; the Playboy Bunnies fear their club is a target and that one of them could be next.

In York, Pa., race riots claim the lives of an African-American mother and a young, white police officer; their deaths are largely forgotten until 30 years later when their cold cases are reopened, revealing the city's dark past.

In June 1977, three little girls are at summer camp when a vicious predator sneaks into their tent in the middle of the night; as day breaks, a camp counselor uncovers what becomes a notorious crime in Oklahoma history.

In June 1977, three little girls are at summer camp when a vicious predator sneaks into their tent in the middle of the night; as day breaks, a camp counselor uncovers what becomes a notorious crime in Oklahoma history.

In 1988, a young woman is found murdered in her Modesto, Calif., home, leading police to investigate the strife and infidelity in her marriage; a surprising witness eventually comes forward.

Elishaba always believed that her father wielded the power of God and that the only way to salvation was through suffering.

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.

Jessica Jaramillio escapes her abusive ex-husband, Chad Graves, but a joint custody agreement for her children means he will always be in their lives; his increasingly obsessive behavior reveals he is not who he presents himself to be.

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.

Jessica Jaramillio escapes her abusive ex-husband, Chad Graves, but a joint custody agreement for her children means he will always be in their lives; his increasingly obsessive behavior reveals he is not who he presents himself to be.

Elishaba always believed that her father wielded the power of God and that the only way to salvation was through suffering.

When Susan Hamlin walks into a police station to confess she is part of a satanic cult and plans to murder her husband, no one can guess the truth is even more bizarre and sinister.

Unlucky in love, Jamie Clark has high hopes after meeting Anthony Lord; by the time she learns about his perverted plans for her, she is already trapped.

William Cosden Jr. coerced his much younger sisters, Karen and Susan, into keeping secrets about what he did; now the girls are adults, and with one facing death, they reunite to try to repair the trauma keeping those secrets caused them.

After her father, Donald Hoop, meets a woman named Joy, Desiree's life spirals; Joy is hot-tempered, cruel and controlling; Desiree knows her dad can't escape his toxic marriage, but she has no clue that Joy is orchestrating a cold-blooded murder.

Tammy Moore's loyalty to her mother, Marie, is absolute; when police arrest Marie for murder, Tammy lies to protect her; a look back at the horrific events of her youth forces Tammy to see her mother in a new, terrifying light.

Vince Boston finds himself an unwitting accomplice to murder; he realizes his father, Silas, has been killing for years; he embarks on a mission to get justice for his father's many victims, which may include Vince's mother.

For two years in Dallas, surgical patients fall victim to a monster with a scalpel and a medical degree.

In 2011, a woman surprises her family on Mother's Day.

In 2005, a woman fails to show up at a Motley Crue concert and is never seen again; to this day, her friends and family wait for her killer to visit her secret grave.

Police search for a killer who guns down a man in a parking lot.

A teenage couple goes on the run after an attack on the boy's sister; a search leads officers to the girl's grandparents' home, where they find the bodies of the elderly couple and uncover a fantasy killing concocted by the psychopathic lovers.

When being interviewed by police, psychopaths often use manipulation to thwart the investigation; experts explore the anatomy of the key manipulative tactics of psychopaths and how they try to utilize them for their own sinister gain.

Police catch a break on three cold case murders when emerging DNA technology makes a stunning match, a 73-year-old man who's been in prison since 1993; detectives interrogate the frail man whose harmless façade is hiding a murderous psychopath.

A psychopathic killer confesses decades after the murders of three women.

Matt Hendershot is devastated when his marriage ends and his ex-wife moves on; but following the death of her lover, he allows her back into his home, along with a collection of the dead man's guns; it is a mistake which will prove to be fatal.

Ann Metz lives for her family, particularly her two beautiful granddaughters; her husband Marshall despises Ann's giving her time to anyone but him, and he will go to desperate measures to keep hold of her.

When Jeff Silvernail returns home to find his partner, Lori, dead in a pool of blood, it appears to be a burglary gone horribly wrong; investigators must uncover whether Jeff is a heartbroken partner or a monster who couldn't cope with rejection.

Rogelio Morales is a handsome Marine who sweeps Margarita Sanchez Lemus off her feet; their whirlwind romance leads to marriage and the birth of a beautiful son; behind Rogelio's winning smile lurks a monster who will soon show his true colors.

Profiles of killers and kidnappers who committed astonishing crimes while leading ordinary lives.

The story of the DC Sniper and Mildred Muhammad; her testimony reveals it was part of a calculated plan rooted in manipulation, control, and domestic abuse driven by a single, dark obsession.

Police find a dead mom in a compromising pose, but nothing is as it seems.

The story of the DC Sniper and Mildred Muhammad; her testimony reveals it was part of a calculated plan rooted in manipulation, control, and domestic abuse driven by a single, dark obsession.

Police find a dead mom in a compromising pose, but nothing is as it seems.

Profiles of killers and kidnappers who committed astonishing crimes while leading ordinary lives.

The resort community of Fort Myers, Fla., is rocked when the historic Coca-Cola plant explodes; then, after a beloved teacher is gunned down, a terrifying culture of gang violence and home-grown terrorism is unearthed.

After arriving for military intelligence training, Pvt. Tracie McBride is kidnapped from a laundry room at Goodfellow Air Force Base in Texas; a hunt for the missing soldier leads to a tale of horror involving a decorated war veteran.

After 23-year-old Ashley Kline is found murdered in a Pennsylvania wildlife preserve, investigators must piece together the last few moments of her life to determine who killed her.

After Jaime Lyn Larson is found murdered in her Portland, Ore., apartment on Christmas day, investigators learn the terrifying truth about her killer.

When a college freshman is raped and murdered, a rookie police officer beats the odds to catch her killer.

After Greg Fleniken checks into a Texas hotel, police find him murdered in his sleep; when the case runs cold, a Long Island PI joins the investigation and uncovers a chilling conspiracy that no one saw coming.

In June 2009, 61-year-old Wendy DiRodio's elderly mother discovers Wendy's body in the bedroom of their shared Ventura County, Calif., home; another murder weeks earlier leads investigators to wonder if a serial killer is on the loose.

A teenager sleeps through the murder of her father, Ken Eaton, at their home; as detectives probe into the beloved teacher's secret love life, they unravel a web of heartbreak, deceit and desire.

After teenager Jessica Dishon is murdered in Shepherdsville, Kentucky, police must sort through her past relationships, jealous friends, and an old family feud to find the killer.

In Post Falls, Idaho, devoted family man Bo Kirk vanishes, and his truck is found set ablaze; Bo's sister blames their estranged father, until released ATM security footage points to one of his co-workers who has piercing blue eyes.

Jill Walker finds her daughter, Emma, cold to the touch in her own bed; quickly ruling out suicide, investigators search for a suspicious man in black caught on a neighbor's home surveillance camera.

Tynesha Stewart, a college freshman at Texas A&M, is reported missing during spring break; as details of her private life emerge, police uncover jealous boyfriends and turmoil at home while making a discovery that will haunt Bordersville forever.

In Harlem, N.Y., a couple discovers it's not better to have the upstairs apartment.

A former cop is moving into a close-knit neighborhood; conflict arises with the whole community over dogs, noise, and other disturbances that keep piling on and ratcheting up until a boiling point is reached, guns are drawn, and blood is spilled.

A five-year relationship between neighbors falls apart when one borrows the other's lawnmower and supposedly returns it broken; camaraderie morphs into rage, threats, and physical violence until a bloody murder devastates the community.

A Baptist pastor moves in next-door to a free-spirited older woman in suburban Las Vegas, leading to years of back and forth accusations of dog theft, intimidation and drug use; once the agitation reaches biblical proportions, retribution is wrought.

A hippie grandpa goes missing on Halloween and turns up in his van, dead, on Elm Street; detectives look into who might have killed this beloved family man, only to find they are on the trail of someone who has most likely killed before.

When a hunter discovers bones in the Pennsylvania woods, it looks like a bear attack; a chilling confession exposes something far more savage - a violent betrayal by those closest to him.

On Friday the 13th, 14-year-old Amber Dubois vanishes; a year later, Chelsea King disappears nearby; as fear spreads, a survivor links the two-and exposes a predator hiding in plain sight.

Doreen and Charles Erbert live a charmed life with their 4-year-old daughter Deanna in San Jose, Calif., then everything comes to a violent end on Halloween night when Doreen is stabbed to death by a masked trick-or-treater.

When a hunter discovers bones in the Pennsylvania woods, it looks like a bear attack; a chilling confession exposes something far more savage - a violent betrayal by those closest to him.

On Friday the 13th, 14-year-old Amber Dubois vanishes; a year later, Chelsea King disappears nearby; as fear spreads, a survivor links the two-and exposes a predator hiding in plain sight.

Doreen and Charles Erbert live a charmed life with their 4-year-old daughter Deanna in San Jose, Calif., then everything comes to a violent end on Halloween night when Doreen is stabbed to death by a masked trick-or-treater.

A hippie grandpa goes missing on Halloween and turns up in his van, dead, on Elm Street; detectives look into who might have killed this beloved family man, only to find they are on the trail of someone who has most likely killed before.

Two girls disappear from neighboring counties, and they are later found murdered; one family receives multiple taunting calls from the killer; investigators work to track him down and succeed after discovering a clue delivered by the killer himself.

Church parishioners call 911 when they find their priest stabbed to death, then police uncover an earlier 911 call made by the priest himself and track a missing cell phone to find his killer.

Calling 911, a young father gasps that he has accidentally shot himself while working on a farm; the police hear a second shot on the line while racing to find him.

In a distressing 911 call, a woman reports someone is breaking into her home, then the dispatcher hears a scream and a gunshot; investigators soon connect the case to a previous home invasion and race to solve the crimes.

Phil Hartman shot to fame on "Saturday Night Live" and had continued success with "The Simpsons" and "News Radio"; off-camera, Phil Hartman's private life was less than perfect.

Phil Hartman shot to fame on "Saturday Night Live" and had continued success with "The Simpsons" and "News Radio"; off-camera, Phil Hartman's private life was less than perfect.

A mother's infatuation with a married man who said he had no interest in being a father to anyone's children was the possible motive behind the crimes of Diane Downs, who allegedly shot her three young children.

A mother's infatuation with a married man who said he had no interest in being a father to anyone's children was the possible motive behind the crimes of Diane Downs, who allegedly shot her three young children.

In 1984, the body of a 14-year-old girl turns up on the beach in San Diego and police think it relates to the murder of another teen; a clue yields an unbelievable suspect.

Police question suspects in the inner circle of Jackie Galloway, a woman found strangled and bound with ritualistic knots; a chance encounter with a prowler leads them to the shocking discovery of a budding serial killer.

Shock sweeps through a Washington community when a suburban mother gets arrested for a murder from a decade earlier in Alaska; details of a seedy and sordid past emerge.

A Texas woman is raped and murdered; a trial sparks a racially charged debate over whether an innocent man was condemned to death; new evidence comes to light; the truth about who killed Stacy Stites.

Adea Shabani crossed oceans to pursue her Hollywood dreams; still, passions run high in La La Land, so when she mysteriously goes missing, investigators scramble to keep her from becoming another of the city's lost angels.

An entertainment writer, a pop starlet, a former Marine and a music producer find themselves in an apartment where one of them ends up dead; police sift through lies and half-truths to uncover what truly happened.

After James Brown dies on Christmas 2006, some suspect murder; the conspiracy grows with the shooting death of his son-in-law Darren Lumar in November 2008; when detectives dig into Lumar's past, the possibility for motives becomes endless.

A small-town family strikes it rich when they find a natural gas pocket under their property; Hollywood comes knocking to give them their own show; when one of the family members shines brightly, not everyone wants her star to rise.

The morning of his anniversary, Mike Williams goes duck hunting; when he fails to return home, an all-out search commences, but it's only the beginning of a sordid mystery that will take close to 20 years to solve.

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

A burned-out car with a body in the trunk and a hidden torture chamber rock the town of Speedway, Indiana; when a similar murder happens in Texas, detectives fear their suspects have crossed state lines and will strike again if they're not stopped.

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

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

A burned-out car with a body in the trunk and a hidden torture chamber rock the town of Speedway, Indiana; when a similar murder happens in Texas, detectives fear their suspects have crossed state lines and will strike again if they're not stopped.

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

The morning of his anniversary, Mike Williams goes duck hunting; when he fails to return home, an all-out search commences, but it's only the beginning of a sordid mystery that will take close to 20 years to solve.

Thirty-two-year-old Anna Lisa Raymundo seems to have it all, including a skyrocketing career, a beautiful home and a loving boyfriend, but a secret betrayal cuts her life short.

In 1984, college student Angela Samota gets noticed by the wrong person leading to the ultimate betrayal.

Ty Underwood leaves her insular hometown to start afresh, vowing to be forthright with potential suitors about being transgender; her shocking murder exposes chats with anonymous men on a phone app.

High school freshman Shaniesha Forbes' body is found on a beach in Brooklyn, N.Y.; NYPD detectives discover her social media life includes a list of 1,600 Facebook friends and possible suspects.

In the wake of a broken marriage, 28-year old Samantha Lezark's efforts to find love again leads to a fatal ending; now, investigators must follow her digital trail through different chat rooms to uncover her killer.

When a young woman disappears after a visit to the mall, and investigators discover from store surveillance footage that she has been abducted, she is found dead in the woods.

In Stamping Ground, Ky., a young woman's dead body is found late at night by her brother and father; when detectives learn the victim was pregnant, they consider it a motive for murder and begin a homicide investigation.

A tip from a missing persons network helps identify the body of a John Doe murder victim, leading investigators to unravel a dark tale of betrayal.

In Rison, Ark., a young woman is abducted from her home in the middle of the night; when investigators dig up her body in the woods, they uncover an appalling murder plot that led to the victim's gruesome demise.

Prison Valley is rocked by the murder of Prisons Chief Tom Clements; the police think it's part of a wider plot, including the death of pizza delivery man Nathan Leon, and they're running out of time to catch the killer.

When Dianne Hood is gunned down outside a community center in Prison Valley, no one can understand why anyone would want to murder the well-liked housewife; the answer involves betrayal, greed and obsession, in an infamous love-triangle murder plot.

The police encounter a bizarre murder case while investigating a deadly home invasion in which Jehovah's Witness Pam Candelario's body is found at the scene and her husband Ralph is brutally beaten.

Exclusive access and never-before-heard testimony gives a unique insight into the mind of America's most notorious serial killer, Ted Bundy; archival materials reveal the monster inside the man.

Exclusive access and never-before-heard testimony gives a unique insight into the mind of America's most notorious serial killer, Ted Bundy; archival materials reveal the monster inside the man.

Serial killer Aileen Wuornos writes down her darkest secrets for her best friend while on Florida's death row; now, for the first time, those secrets are revealed in detail.

Serial killer Aileen Wuornos writes down her darkest secrets for her best friend while on Florida's death row; now, for the first time, those secrets are revealed in detail.

On Halloween, the brutalized body of a teenage girl turns up near her house in the rich hamlet of Belle Haven, Conn.; though police focus on a tutor for the prominent Skakel family next door, the truth remains shrouded in secrecy for decades.

As Lynn Steller and her nephew Ronald lie motionless in their kitchen, Lynn's girlfriend arrives home; at first, the woman thinks this is an elaborate Halloween prank, but when she looks again, she discovers a scene that will haunt her forever.

After leaving a Girl Scouts Halloween party, 11-year-old Shauna Howe disappears; Shauna's body is found two days later, and the hunt for her killer begins.

As Lynn Steller and her nephew Ronald lie motionless in their kitchen, Lynn's girlfriend arrives home; at first, the woman thinks this is an elaborate Halloween prank, but when she looks again, she discovers a scene that will haunt her forever.

After leaving a Girl Scouts Halloween party, 11-year-old Shauna Howe disappears; Shauna's body is found two days later, and the hunt for her killer begins.

In 1963, Carol Thompson, church-going wife and devoted mother of four, is found in a bloody heap on her neighbor's doorstep; now, detectives must peel away the layers of her picture-perfect life to reveal the victim's painful secrets.

In Bronx, N.Y., 1941, tea for two ends in murder, and investigators must count on the testimony of a few brave women to bring the killer to justice.

A night of music and hot-tubbing leads to professor Marianne Shockley's death and former psychologist Clark Heindel killing himself; police charge Shockley's boyfriend, Marcus Lillard, with her death.

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

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

The murder of a young entrepreneur triggers a labyrinthine investigation.

A small town murder leads to a decades long investigation.

A dismembered corpse floating in Thunder Bay opens up a vexing mystery.

Two South Carolina women make unthinkably horrifying discoveries on their doorsteps, including ominous death threats and trash bags containing severed human appendages.

In Michigan, the family of a shooter begs him to give himself up; in Florida, a day cruise goes wrong and rescuers race to save two drowning families; in Detroit, suspects stealing marijuana flee at high speed through the city.

Body cameras capture the life-or-death decisions made by police officers, from domestic disputes to traffic stops gone dangerously awry.

In Wisconsin, a suspected hit-and-run takes a dangerous turn when a witness opens fire leaving two officers down; in Georgia, a mother and her children hide in a closet after a gang leader barricades himself in their apartment.

Agnes Bram, an 82-year-old Middleton, Wis., woman is found murdered in her garage; as detectives develop their case, a city-wide manhunt follows, and investigators must curb public hysteria by ensuring the killer will not kill again.

In Alabama, Brucetravius Frazier lies dead in his car from a gunshot wound to his head; a subsequent attempt on a witness's life causes police to realize they're not dealing with the average killer and must work quickly to bring them to justice.

Ty Underwood, a transgender woman, is found shot to death in her car, and detectives wonder if she is the victim of a hate crime.

In Ore City, Texas, firefighters extinguish a burning truck to reveal the charred remains of a human corpse inside; it soon becomes apparent that this fiery incident was no accident.

NYPD detectives discover a bullet-pierced body stuffed into the trunk of a car and quickly find themselves drawn into a dark tale of brotherhood, backstabbing and betrayal.

In Logan, Ohio, investigators receive word someone has been kidnapped from their job at the bank in a car that resembles a police cruiser; eventually, detectives discover a very personal connection between the victim and the kidnappers.

A Kentucky woman's distraught nephew appears at her house across from his family's farm; when she accompanies him home, she makes a nightmarish discovery that reveals her nephew is the sole survivor of his family.

In Logan, Ohio, investigators receive word someone has been kidnapped from their job at the bank in a car that resembles a police cruiser; eventually, detectives discover a very personal connection between the victim and the kidnappers.

In Logan, Ohio, investigators receive word someone has been kidnapped from their job at the bank in a car that resembles a police cruiser; eventually, detectives discover a very personal connection between the victim and the kidnappers.

A Kentucky woman's distraught nephew appears at her house across from his family's farm; when she accompanies him home, she makes a nightmarish discovery that reveals her nephew is the sole survivor of his family.

NYPD detectives discover a bullet-pierced body stuffed into the trunk of a car and quickly find themselves drawn into a dark tale of brotherhood, backstabbing and betrayal.

In Tucson, Ariz., a newly wealthy family is living the American dream, but their world quickly turns upside down as marital problems and family feuds boil to the surface of this seemingly perfect life.

In Tucson, Ariz., a newly wealthy family is living the American dream, but their world quickly turns upside down as marital problems and family feuds boil to the surface of this seemingly perfect life.

The baffling murder of a young woman leads police to two potential suspects: her new boyfriend and an obsessed stalker.

A murdered teenager's body mysteriously turns up in the rural Iowa countryside; the smallest clue could be the key to bringing her killer to justice.

A woman's crusade to teach children to read may have led to her murder; police ultimately realize their only hope of finding an answer is to follow the clues left behind by the victim.

Chilling evidence found inside a quaint Utah bookstore brings the killer of its beloved owner to justice.

The story of the DC Sniper and Mildred Muhammad; her testimony reveals it was part of a calculated plan rooted in manipulation, control, and domestic abuse driven by a single, dark obsession.

When Stacy Malman and Robert Feldman fall in love, it's a dream come true; behind closed doors, life becomes a living hell; one night, a knock at the door forces the couple to confront the truth and triggers a series of events ending in horror.

After years of abuse, Cheryl musters the courage to leave her husband, Thom; he stalks her and torments their two children; when Cheryl finds a new love, her ex sets a trap to take the ultimate revenge.

Maria's world shatters when her husband Joel, starts an affair; she fights to save their marriage, but Joel refuses to give up his mistress, and Maria's patience runs out; when she threatens divorce, Joel makes a deadly plan to stop her.

Police officer Andy Kimbrel hopes to find happiness with new wife, Stephanie Keller, but when the marriage starts to fail, Andy falls victim to manipulation and violence; a fierce argument leads to tragedy, and police suspect something more.

After years apart, Jamie-Lee Arrow reunites with her father, Isakin Drabbad to confront him over his girlfriend's infamous murder; Jamie also confronts him about the torment she once suffers at her father's hands.

Josh Clark takes what he wants; his family loves and supports him, but he's intent on destroying them; no one sacrifices more for him than his grandmother, yet she's the one who suffers his wrath; now, his mom and brother want him to tell them why.

Going inside prison walls to interview evil itself as relatives of killers, along with killers themselves, tell their chilling tales; questions these killers have never been asked before result in powerful, unsettling and contentious encounters.

Profiles of killers and kidnappers who committed astonishing crimes while leading ordinary lives.

Behind the meek and mild exterior of Robert Hansen lurked a cold-blooded serial murderer who confessed to killing 21 women, 17 of whom were recovered.

Experts look at a subset of psychopaths who are motivated by their heightened sexual urges and fantasies; this subset of offenders doesn't just enact physical violence but sexual violence toward their victims and is known as the sexual psychopath.

Behind the meek and mild exterior of Robert Hansen lurked a cold-blooded serial murderer who confessed to killing 21 women, 17 of whom were recovered.

Experts look at a subset of psychopaths who are motivated by their heightened sexual urges and fantasies; this subset of offenders doesn't just enact physical violence but sexual violence toward their victims and is known as the sexual psychopath.

Profiles of killers and kidnappers who committed astonishing crimes while leading ordinary lives.

In Pensacola, Fla., a beloved barber is gunned down in his shop in broad daylight; DNA left at the crime scene may hold the answer to solving this murder mystery.

After grandmother Irene Kennedy is found dead in a park, a distant relative is charged with her murder, splitting her family apart; it will take years, another killing and a jail house snitch to bring the family back together.

Police are perplexed to learn Johnny Crawford may have been shot dead over a musical instrument, but Lt. Joe Kenda digs deeper, and it soon becomes clear the young man wasn't killed for his own sins, but for someone else's.

Lt. Joe Kenda showcases homicide detectives from across the United States who worked tirelessly to put killers behind bars and bring justice to victims.

When affable ladies' man Michael Tittemore is gunned down in the dead of night, Lt. Joe Kenda sets his sights on the roommates who were present during the murder; then, a revelation turns his attention to a far more nefarious band of suspects.

When the body of high school student Debbie Gama is discovered in a creek wrapped in wire, the ensuing investigation reveals a secret world of twisted sex, drugs, sadomasochism and bondage.

In Toledo, Ohio, Sister Margaret Ann is discovered dead in the chapel on Holy Saturday morning; police mount an investigation that will unearth the lies and secrets leading to her death.

Pretty preteen Rosie Davenport is found brutally murdered in an abandoned house, the circumstances of her death eerily similar to the unsolved murder of 13-year-old Malissa Thomas one year earlier.

Madison Wells, a 16-year-old student in New Jersey, is found murdered in her aunt's kitchen; when police look into her relationship with a 20-year-old, they go down a rabbit hole that exposes an abusive relationship that leads to a tragic death.

Steven Begay is a loving uncle whose nephews see as a protector, but his bloody body is found near a playground in New Mexico; a manhunt ensues leaving police with a major discovery that turns the case on its head.

Bodycam video captures the hunt for a madman who unleashed a six-person killing spree upon the Scottsdale, Ariz., area over the course of 96 hours.

Homicide investigations unfold through dramatic, real footage in this groundbreaking series; viewers get an up-close perspective of each case using raw, unfiltered footage.

In 2018, an explosion kills Anthony House on his doorstep; as police investigate, another bomb goes off, killing teen Draylen Mason; it becomes clear that Austin, Texas, is under attack from a serial bomber; police must use CCTV to track him down.

In 2018, a killer shoots 33-year-old restaurant worker Joshua Webb outside an apartment block in Beckley, W.V.; to solve the murder and identify the culprit, police must unravel a web of lies by following a trail of security footage.

In the aftermath of the brutal slaying of a homeless man, James Tony Wise, Portland PD, turns to the footage from CCTV cameras to find his killer; detectives use the images to retrace the rampage through the city of a violent offender.

When a gunman shoots Reggie Ward at a gas station in Cedar Rapids, Iowa, witnesses and the victim's girlfriend, are unable to identify the shooter; investigators follow a trail of surveillance footage and GPS data to find an unexpected suspect.

After the shooting of a military veteran in his own home, detectives hunt a trail of CCTV across Kansas City to find his elusive killers; grainy footage reveals a connection between the hooded assailant and the driver of a silver BMW.

When Angela Prichard was terrorized by her husband, she turned to the police for help, but it did not prevent her death.

In Wisconsin, a burglar in handcuffs escapes police custody in a squad car and goes into hiding; in Oklahoma, a simple conversation ends up in a shoot-out at a gas station with an officer down.

Ahmad Shad Laster's loved ones are grief-stricken when he is shot outside a friend's home; Flagler County, Fla., detectives uncover evidence that blows the case wide open, but the hunt for justice tests family bonds and reveals shocking secrets.

When Angela Prichard was terrorized by her husband, she turned to the police for help, but it did not prevent her death.

In Wisconsin, a burglar in handcuffs escapes police custody in a squad car and goes into hiding; in Oklahoma, a simple conversation ends up in a shoot-out at a gas station with an officer down.

Ahmad Shad Laster's loved ones are grief-stricken when he is shot outside a friend's home; Flagler County, Fla., detectives uncover evidence that blows the case wide open, but the hunt for justice tests family bonds and reveals shocking secrets.

After the shooting of a military veteran in his own home, detectives hunt a trail of CCTV across Kansas City to find his elusive killers; grainy footage reveals a connection between the hooded assailant and the driver of a silver BMW.

Enraged drivers are caught on camera going toe-to-toe with other motorists in extreme road rage moments.

Enraged drivers are caught on camera going toe-to-toe with other motorists in extreme road rage moments.

Enraged drivers are caught on camera going toe-to-toe with other motorists in extreme road rage moments.