The building of a backyard shed destroys a yearslong, close relationship between two neighbors and ignites a vicious conflict that sees property destroyed, pets killed, and finally two people shot to death in cold blood.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

A Detroit man wishes his neighbor lived on the opposite end of 8 Mile Road.

The building of a backyard shed destroys a yearslong, close relationship between two neighbors and ignites a vicious conflict that sees property destroyed, pets killed, and finally two people shot to death in cold blood.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

When a devoted father is found brutally stabbed to death in his Florida home, detectives turn their focus to the picture-perfect family who appear to have it all.

Josh Mankiewicz reports on the mysterious disappearance of a Colorado rancher, whose friends think something isn't right and spend years fighting for answers.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

A Detroit man wishes his neighbor lived on the opposite end of 8 Mile Road.

After a Georgia father is discovered bludgeoned by a hammer in his own bedroom, it takes years for detectives to nail down if this murder is connected to a series of online romances or a case of mistaken identity.

When a man goes missing in rural Barnesville, Ga., investigators try to determine if he left on his own or if foul play occurred.

Years after the kidnapping of Amanda Lindhout, secret agents put a daring undercover sting into action.

When a Colorado mother vanishes, the detective investigating her disappearance discovers a connection to a previous assault; the survivor of that attack recounts her terrifying ordeal.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

Josh Mankiewicz reports on the mysterious disappearance of a Colorado rancher, whose friends think something isn't right and spend years fighting for answers.

After a Georgia father is discovered bludgeoned by a hammer in his own bedroom, it takes years for detectives to nail down if this murder is connected to a series of online romances or a case of mistaken identity.

When a man goes missing in rural Barnesville, Ga., investigators try to determine if he left on his own or if foul play occurred.

Years after the kidnapping of Amanda Lindhout, secret agents put a daring undercover sting into action.

When a Colorado mother vanishes, the detective investigating her disappearance discovers a connection to a previous assault; the survivor of that attack recounts her terrifying ordeal.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

When a well-liked young man in Milwaukee is found shot to death inside his locked home, detectives must piece together his final days through a network of friends and lovers to expose a killer's desire to kill what they couldn't keep.

They say fences make good neighbors, but sometimes they can make dead ones.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Some grudges die hard, but this neighbor's won't die until his enemies do.

They say fences make good neighbors, but sometimes they can make dead ones.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

When a well-liked young man in Milwaukee is found shot to death inside his locked home, detectives must piece together his final days through a network of friends and lovers to expose a killer's desire to kill what they couldn't keep.

A nurse is gunned down in her home and detectives believe they have a clear suspect; as they delve deeper into the investigation new information leads them down a completely different path.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Some grudges die hard, but this neighbor's won't die until his enemies do.

While investigating a missing Oregon handyman, police stumble upon human remains and are left searching a crime scene straight out of a horror movie.

After detectives discover a fire chief's dismembered torso in his own barn, they rush to find his wife.

A teenager is convicted of encouraging her boyfriend to kill himself; exclusive interviews with those on both sides of the case.

After an apparent brazen home invasion during the holiday season in a Connecticut community leaves Connie Dabate dead, investigators discover a silent witness that cracks the case wide open.

Twenty-year-old Tiffanie Adams is eight months pregnant when she suddenly disappears; to solve the mystery, police must expose toxic relationships and deadly secrets.

A nurse is gunned down in her home and detectives believe they have a clear suspect; as they delve deeper into the investigation new information leads them down a completely different path.

While investigating a missing Oregon handyman, police stumble upon human remains and are left searching a crime scene straight out of a horror movie.

After detectives discover a fire chief's dismembered torso in his own barn, they rush to find his wife.

A teenager is convicted of encouraging her boyfriend to kill himself; exclusive interviews with those on both sides of the case.

After an apparent brazen home invasion during the holiday season in a Connecticut community leaves Connie Dabate dead, investigators discover a silent witness that cracks the case wide open.

Twenty-year-old Tiffanie Adams is eight months pregnant when she suddenly disappears; to solve the mystery, police must expose toxic relationships and deadly secrets.

From tropical Hawaii to the frigid waters of Lake Ontario, experts reveal the clues nature leaves behind on a human corpse.

When a young Texas father is abducted without a trace and later found murdered, Titus County investigators follow a trail of cellphone records and internet history to reveal a dangerous conspiracy fueled by a manipulative mastermind.

A Virginia man insists, What's mine is mine, and what's yours is mine.

From tropical Hawaii to the frigid waters of Lake Ontario, experts reveal the clues nature leaves behind on a human corpse.

A handyman, living rent-free in the home of a generous friend, grows increasingly paranoid about his neighbors; filming them constantly and fighting with them incessantly until conflict escalates out of control and culminates in explosive violence.

A Virginia man insists, What's mine is mine, and what's yours is mine.

From tropical Hawaii to the frigid waters of Lake Ontario, experts reveal the clues nature leaves behind on a human corpse.

When a young Texas father is abducted without a trace and later found murdered, Titus County investigators follow a trail of cellphone records and internet history to reveal a dangerous conspiracy fueled by a manipulative mastermind.

A look at the case of con man John Meehan, including interviews with his wife and her daughter, his ex-wife, law enforcement officers, and the Los Angeles Times reporter who shined a spotlight on the story.

From tropical Hawaii to the frigid waters of Lake Ontario, experts reveal the clues nature leaves behind on a human corpse.

A handyman, living rent-free in the home of a generous friend, grows increasingly paranoid about his neighbors; filming them constantly and fighting with them incessantly until conflict escalates out of control and culminates in explosive violence.

Investigators must determine if they are looking for professional killer, or if they are being told lies from someone in the victim's inner circle, when a Tennessee man who was rumored to have connections with the mob is murdered.

When the loving wife of a Vietnam veteran is found dead in a highway commuter lot, Missouri detectives work to chase down the mastermind of a twisted murder-for-hire plot.

The friends of a father from Georgia accused of murdering his ex-wife come together to prove he is innocent, while prosecutors count on his young children to testify against him.

Hunters stumble across a young woman's decaying body wrapped in fabric, launching an investigation across several counties in Florida; horrific rumors quickly swirl and a night of partying that morphed into an act of desperation is revealed.

As Pennsylvania police investigate the gruesome murder of a grandmother in her own home, detectives sort through a web of lies and nefarious activities before ultimately going toe to toe with a cold-blooded killer.

The twisted story of a heinous murder plot in Kansas; rife with betrayal and deceit; in an exclusive interview with someone personally involved in the crime, hear a riveting account of the deadly scheme.

A look at the case of con man John Meehan, including interviews with his wife and her daughter, his ex-wife, law enforcement officers, and the Los Angeles Times reporter who shined a spotlight on the story.

Investigators must determine if they are looking for professional killer, or if they are being told lies from someone in the victim's inner circle, when a Tennessee man who was rumored to have connections with the mob is murdered.

When the loving wife of a Vietnam veteran is found dead in a highway commuter lot, Missouri detectives work to chase down the mastermind of a twisted murder-for-hire plot.

The friends of a father from Georgia accused of murdering his ex-wife come together to prove he is innocent, while prosecutors count on his young children to testify against him.

Hunters stumble across a young woman's decaying body wrapped in fabric, launching an investigation across several counties in Florida; horrific rumors quickly swirl and a night of partying that morphed into an act of desperation is revealed.

As Pennsylvania police investigate the gruesome murder of a grandmother in her own home, detectives sort through a web of lies and nefarious activities before ultimately going toe to toe with a cold-blooded killer.

The twisted story of a heinous murder plot in Kansas; rife with betrayal and deceit; in an exclusive interview with someone personally involved in the crime, hear a riveting account of the deadly scheme.

When a firebomb attack destroys the home of two sisters, police turn to the neighborhood for answers, but the high-profile case takes an odd turn once detectives realize they have a homicide on their hands and the culprit is much closer to home.

The murder of an Arabi, La., man forces authorities to examine every possible lead as they eventually learn their prime suspect is closely tied to an open cold case in Indiana.

Investigators work to uncover the truth behind a local church scandal in order to pin down a most unlikely suspect after a young Texas teacher is found axed to death on Friday the 13th.

When a beloved woman in North Carolina is found stabbed to death in her own home, investigators uncover an unnerving history of harassment carried out by a killer blinded by jealousy.

A serial killer in Spokane, Wash. murders prostitutes and leaves a bag with a smiley face on the victim's head.

Officials look to state-of-the-art DNA analysis to help capture a serial killer in the Louisiana State University area of Baton Rouge.

When a firebomb attack destroys the home of two sisters, police turn to the neighborhood for answers, but the high-profile case takes an odd turn once detectives realize they have a homicide on their hands and the culprit is much closer to home.

The murder of an Arabi, La., man forces authorities to examine every possible lead as they eventually learn their prime suspect is closely tied to an open cold case in Indiana.

Investigators work to uncover the truth behind a local church scandal in order to pin down a most unlikely suspect after a young Texas teacher is found axed to death on Friday the 13th.

When a beloved woman in North Carolina is found stabbed to death in her own home, investigators uncover an unnerving history of harassment carried out by a killer blinded by jealousy.

Mama Edna, a pillar of the Haitian community in Brooklyn is adored by all as the matriarch of East Flatbush; when she is found murdered in her home, NYPD uncover a Voodoo practice that leads them to a web of the unthinkable.

When a beloved landlord disappears in Brooklyn, the NYPD is convinced it's more than a missing person's case; without a body and with limited physical evidence, asuspect roams the city for years until discovering a secret witness to the grisly truth.

In the 1990s, a group of over-the-top misfits known as the Club Kids rule New York's downtown club scene; after a beloved member goes missing, a gruesome rumor circulates and detectives uncover a seedy world of drugs, debauchery and murder.

When a Holocaust survivor and the king of the disco scene is found bound and murdered on the Upper East Side, detectives embark on a multi-borough investigation, uncovering a salacious private life with a woman who may hold clues to his demise.

Two neighboring bachelors start out as friends; harmless banter turns into threats eventually igniting an escalating war; the violence ends with a murder so shocking it is almost beyond belief.

Upon landing in Rome, Cassie deals with her sudden feelings of loss, and Megan confesses that she has secrets of her own; back in New York, Cassie doubles down on finding Miranda by unceremoniously crashing Alex's memorial service.

After piecing together evidence with help from Max, Cassie follows the paper trail to an empty private jet manned by Nate; Megan attempts to hide her shady dealings from her family; Annie faces a reprimand from her boss, Diana.

Mama Edna, a pillar of the Haitian community in Brooklyn is adored by all as the matriarch of East Flatbush; when she is found murdered in her home, NYPD uncover a Voodoo practice that leads them to a web of the unthinkable.

When a beloved landlord disappears in Brooklyn, the NYPD is convinced it's more than a missing person's case; without a body and with limited physical evidence, asuspect roams the city for years until discovering a secret witness to the grisly truth.

In the 1990s, a group of over-the-top misfits known as the Club Kids rule New York's downtown club scene; after a beloved member goes missing, a gruesome rumor circulates and detectives uncover a seedy world of drugs, debauchery and murder.

When a Holocaust survivor and the king of the disco scene is found bound and murdered on the Upper East Side, detectives embark on a multi-borough investigation, uncovering a salacious private life with a woman who may hold clues to his demise.

Two neighboring bachelors start out as friends; harmless banter turns into threats eventually igniting an escalating war; the violence ends with a murder so shocking it is almost beyond belief.

Upon landing in Rome, Cassie deals with her sudden feelings of loss, and Megan confesses that she has secrets of her own; back in New York, Cassie doubles down on finding Miranda by unceremoniously crashing Alex's memorial service.

After piecing together evidence with help from Max, Cassie follows the paper trail to an empty private jet manned by Nate; Megan attempts to hide her shady dealings from her family; Annie faces a reprimand from her boss, Diana.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

When an Atlanta businessman is shot to death in front of his son's preschool, detectives try to track down the disguised gunman.

Three people are gunned down in a gold coin shop in Newport Beach, Calif., and with little to go on, detectives slowly piece together a murder plot that didn't exactly turn out as planned.

The promising trajectory of a rising star athlete from Orange is cut tragically short when he is found shot to death on a desolate road.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Badly burnt human remains recovered in a blazing car fire suggest Clayton Daniels died in a horrible road accident.

Mama Edna, a pillar of the Haitian community in Brooklyn is adored by all as the matriarch of East Flatbush; when she is found murdered in her home, NYPD uncover a Voodoo practice that leads them to a web of the unthinkable.

When a beloved landlord disappears in Brooklyn, the NYPD is convinced it's more than a missing person's case; without a body and with limited physical evidence, asuspect roams the city for years until discovering a secret witness to the grisly truth.

In the 1990s, a group of over-the-top misfits known as the Club Kids rule New York's downtown club scene; after a beloved member goes missing, a gruesome rumor circulates and detectives uncover a seedy world of drugs, debauchery and murder.

When a Holocaust survivor and the king of the disco scene is found bound and murdered on the Upper East Side, detectives embark on a multi-borough investigation, uncovering a salacious private life with a woman who may hold clues to his demise.

An elite California lakeside community is shaken when two well-to-do gentlemen go to war over a one-inch property line discrepancy; one neighbor takes the dispute to new heights when he hires a hit man to solve the problem permanently.

A three-year feud over land and morals reaches a bloody conclusion for a young mother in Miami.

In Carmel Canyon, Calif., wealthy neighbors get into disputes over everything from shared roads and bridges to the upkeep of their respective properties until anger boils over and the ongoing feud is resolved with fatal gunfire.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

When an Atlanta businessman is shot to death in front of his son's preschool, detectives try to track down the disguised gunman.

Speaking on camera for the first time, Cameo Clines revisits the deadly Texas crime spree born from a toxic romance; from behind bars, he offers a rare look into the events that led to two murders and shares his hopes for redemption.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Badly burnt human remains recovered in a blazing car fire suggest Clayton Daniels died in a horrible road accident.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

When an Atlanta businessman is shot to death in front of his son's preschool, detectives try to track down the disguised gunman.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

The promising trajectory of a rising star athlete from Orange is cut tragically short when he is found shot to death on a desolate road.

Speaking on camera for the first time, Cameo Clines revisits the deadly Texas crime spree born from a toxic romance; from behind bars, he offers a rare look into the events that led to two murders and shares his hopes for redemption.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

After a soon-to-be-wed scrapyard owner is killed, Texas detectives must chase down every lead and conduct hundreds of interviews in order to find the truth hidden behind lies, betrayal and broken hearts.

Two women with a shared wall between their townhouses become increasingly volatile with each other; food fights, physical altercations and vandalism come to a bloody climax.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

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.

Two women with a shared wall between their townhouses become increasingly volatile with each other; food fights, physical altercations and vandalism come to a bloody climax.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

After a soon-to-be-wed scrapyard owner is killed, Texas detectives must chase down every lead and conduct hundreds of interviews in order to find the truth hidden behind lies, betrayal and broken hearts.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

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.

When an Oklahoma teen finds her mother and father murdered in their family home, detectives uncover bizarre photos and use new technology to reveal a dynamic duo at the center of the heinous crime.

The abrupt disappearance of a Colorado rancher prompts concerned friends to press investigators to dig up the truth hidden beneath his ranch's calm exterior.

A man disappears after a duck hunting trip in Florida on his sixth wedding anniversary and is later found to have been murdered.

A hardworking family man gets a second chance at love with a woman who has a dark past; soon, the man's family is torn apart by drugs, lies and a treacherous murder plot.

A deep dive into some of the most chilling murder cases in New York City's recent history. New York City is a shining beacon of opportunity for people across the world and a true melting pot. It's a city with a gritty core, where tensions run high. A series of details to the brazen crimes that could only happen in New York and the intense work by law enforcement and civilians who race to take murderers off the streets. Cases include a Meatpacking District disappearance and a murder at the Met.

A woman is found dead in an elevator, but her murder is just the beginning; as Barbara Butcher retraces the chain of evidence, she uncovers a domino effect of violence that leaves a trail of bodies across the Bronx.

A California Granny is thought of as a Mother Teresa to the downtrodden thanks to the boarding house she runs; but when a social worker raises fears for a missing client, investigators find that Granny's carefully tended garden hides horrors.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

When an Oklahoma teen finds her mother and father murdered in their family home, detectives uncover bizarre photos and use new technology to reveal a dynamic duo at the center of the heinous crime.

The abrupt disappearance of a Colorado rancher prompts concerned friends to press investigators to dig up the truth hidden beneath his ranch's calm exterior.

A man disappears after a duck hunting trip in Florida on his sixth wedding anniversary and is later found to have been murdered.

A hardworking family man gets a second chance at love with a woman who has a dark past; soon, the man's family is torn apart by drugs, lies and a treacherous murder plot.

A deep dive into some of the most chilling murder cases in New York City's recent history. New York City is a shining beacon of opportunity for people across the world and a true melting pot. It's a city with a gritty core, where tensions run high. A series of details to the brazen crimes that could only happen in New York and the intense work by law enforcement and civilians who race to take murderers off the streets. Cases include a Meatpacking District disappearance and a murder at the Met.

A woman is found dead in an elevator, but her murder is just the beginning; as Barbara Butcher retraces the chain of evidence, she uncovers a domino effect of violence that leaves a trail of bodies across the Bronx.

A California Granny is thought of as a Mother Teresa to the downtrodden thanks to the boarding house she runs; but when a social worker raises fears for a missing client, investigators find that Granny's carefully tended garden hides horrors.

Criminals are betrayed by the clues their own bodies leave behind.

Detectives track down leads from rival biker clubs and scorned lovers to uncover the truth when a beloved biker is found shot to death in his Pennsylvania apartment.

A former police chief gets into constant conflicts with a young renter who doesn't respect his authority; the war between them intensifies until blood flows down their street.

Criminals are betrayed by the clues their own bodies leave behind.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved and flaring tempers lead to fist fights, stabbings, and ultimately a shocking shootout captured on video.

A former police chief gets into constant conflicts with a young renter who doesn't respect his authority; the war between them intensifies until blood flows down their street.

Criminals are betrayed by the clues their own bodies leave behind.

Detectives track down leads from rival biker clubs and scorned lovers to uncover the truth when a beloved biker is found shot to death in his Pennsylvania apartment.

A murder outside Pleasantville, Iowa, divides a family and forces one man to take the investigation into his own hands.

Criminals are betrayed by the clues their own bodies leave behind.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved and flaring tempers lead to fist fights, stabbings, and ultimately a shocking shootout captured on video.

An Alabama trucker is found shot in his home on the same day his wife is giving birth.