Investigation Discovery

At 17, Kianna Galvin leaves home and never returns. Years later, Detective Pam Childs searches for clues to bring her family answers.

When a Mother's Day killing horrifies a town, investigators must understand what motivates a monster to predict the killer's next move.

When investigators suspect a mother's involvement in the death of her two children, Ranger Jim Holland comes in to unearth the truth.

26-year-old Luigi Mangione is a young man from wealth and privilege. What drove him to the deadly shooting of United Healthcare CEO, Brian Thompson?

At 17, Kianna Galvin leaves home and never returns. Years later, Detective Pam Childs searches for clues to bring her family answers.

Trusted crime journalists reveal the shocking twists and unexpected resolutions that occurred while they were investigating high-profile crime cases.

Nancy Moyer isn't there when her kids come home after a weekend away. Then, a random murder occurs nearby soon after - was Nancy murdered by a serial killer?

When a solitary mail carrier disappears for days, no-one knows where she's gone. After her burnt body is found in the desert, detectives hunt a murderer.

A mother disappears in Virginia, and her body is later found in an open field. Detectives uncover shocking footage that shows what happened in her final moments.

Marlin Barnes, a popular sportsman, and his friend, Timwanika Lumpkins, are beaten to death in Marlin's apartment. The crime sends shockwaves through the community.

A California couple's son is convicted of their brutal murder. But the victim's sister is convinced her nephew was wrongfully convicted. Can Chris and Melissa help?

A 17-year-old takes a deadly road trip that exposes the inner psychopath lurking within.

A mother is found dead after reporting her son to the police. When he turns himself in, his confession isn't just cold-hearted, it's psychopathic.

A nurse confesses the horrors she routinely inflicted on numerous elderly patients in Canada.

After his conviction for brutally slaying his wife, a Florida inmate says he has killed another woman, revealing he's a psychopath with a history of violence.

A woman vanishes from her home in Bell Center, Missouri. Hoping to find her before it's too late, the community aids investigators in an exhaustive search.

When overnight motel desk clerk, Mary Klatt, is brutally strangled to death at work, the local community struggle with the harsh reality that someone could harm her.

In Dallas, Texas, surgical patients were falling victim to a monster with a medical degree. An investigation showed Dr. Christopher Duntsch was to blame.

A landlord approaches his rental home to inspect a broken window when he hears a baby crying. What he finds inside will haunt two families forever.

When successful paralegal John Ray's body is found in his home, detectives are stumped. Years later, a hidden message from the victim provides new clues.

Eva Shoen's lifeless body is found under mysterious circumstances. For years, authorities navigate a barrage of leads in order to uncover the truth.

In the 1970's, Anneka Di Lorenzo found fame as a successful model in Penthouse Magazine. However, from that point, her life unravelled with tragic consequences.

Cast and crew recount the rise of Glee and reveal how sudden stardom and the unrelenting pressure of making a hit show can have tragic consequences.

Detective Ben Elkins gets called in to search for a missing farmhand. But when the man's body turns up miles down the Coweeman river, the case takes a sinister turn.

True crime superstar Lt. Joe Kenda showcases a homicide detective who put it all on the line to solve a memorable case, and their efforts to find justice.

A Northern California woman beats cancer but is now in a fight she can't win against the angry dead in her home.

Nick and Katrina have researched the haunting at Newsham Park Hospital for years. After 72 hours in the former orphanage, they question their preconceptions.

Jack and Katrina gain unprecedented access to a farm in Colorado that was once home to serial killers. The current owners reported a rise in paranormal activity.

Nick and Katrina have researched the haunting at Newsham Park Hospital for years. After 72 hours in the former orphanage, they question their preconceptions.

The sprawling Margam Castle property has been considered sacred land for over 4,000 years. Nick and Katrina must face a lurking presence in the decadent Welsh home.

A 22-year-old Liz Syperda is reported missing, shocking the community of Mount Pleasant, Iowa. Did she run away or has something far more disastrous occurred?

A local in Algona, Iowa, stumbles upon a truck with the body of a young mother inside. Investigators trace the woman's last movements to find her killer.

In Dallas, Texas, surgical patients were falling victim to a monster with a medical degree. An investigation showed Dr. Christopher Duntsch was to blame.

Casey Anthony insists that her two-year-old daughter Caylee was abducted by the nanny, but investigators learn the child has been missing for 31 days. Where is she?

As the Casey Anthony trial begins, the defence unleashes shocking allegations about Caylee and Casey's dad - and the prosecution theorizes how Caylee died.

As the trial continues, the defence takes centre stage, challenging the prosecution's forensic evidence. The verdict sparks outrage across the country.

A mother's fascination with extreme religious ideas and hidden postpartum psychosis lead her to believe Satan is sending her messages and she drowns all five of her children. PREMIERE

When two friends disappear and another is murdered, their mums join forces to try and solve three terrible mysteries. Are these three cases connected?

Tragic discoveries solidify the mums' fear that their cases intertwine. Their kids were on dark paths that brought them close to dangerous characters.

As police hunt for a killer, a press conference threatens the mums' bonds. An arrest furthers the investigation, but answers won't come easily.

In the early 1980s in Atlanta, at least twenty-nine black children were abducted and murdered. Local police rushed to find the killer, but the perpetrator has never been confirmed.

Casey Anthony insists that her two-year-old daughter Caylee was abducted by the nanny, but investigators learn the child has been missing for 31 days. Where is she?

As the Casey Anthony trial begins, the defence unleashes shocking allegations about Caylee and Casey's dad - and the prosecution theorizes how Caylee died.

As the trial continues, the defence takes centre stage, challenging the prosecution's forensic evidence. The verdict sparks outrage across the country.

A mother's fascination with extreme religious ideas and hidden postpartum psychosis lead her to believe Satan is sending her messages and she drowns all five of her children. PREMIERE

At 17, Kianna Galvin leaves home and never returns. Years later, Detective Pam Childs searches for clues to bring her family answers.

The story of the mother and daughter relationship of Dee Dee and Gypsy Rose Blanchard.

Kathy Folbigg claims she is innocent of killing her four children, in a case reminiscent of Sally Clark, whose first son died at 11 weeks, and second at just eight weeks.

While Sally Clark sits in prison for life, journalist John Sweeny and attorney Marylin Stowe look at her case and make their own startling discoveries.

The story of the mother and daughter relationship of Dee Dee and Gypsy Rose Blanchard.

A landlord approaches his rental home to inspect a broken window when he hears a baby crying. What he finds inside will haunt two families forever.

A long haul trucker disappears. Thirteen years later a tax auditor goes missing. The investigation into one case expands into the other, revealing a grisly crime.

Danny Coleman's charred remains are found 50 miles from his home. The near 20-year hunt for his killers will involve sex, drugs and a voice from the grave.

When Lisa Solomon disappears on Christmas eve, her family search relentlessly. Did she leave her new husband in the night, or is something more sinister at play?

When rising star Rebecca Schaeffer is murdered, Hollywood panics. Detectives investigate who killed the beloved actress, and if a copycat killer is on the loose.

Tabitha has recently split up with her boyfriend and is out flirting again. But her new fling brings trouble and leads from passion to a grizzly double murder.

How far would you go for the person you love? This show lifts the lid on unbelievable crimes in which one human's love or devotion is chosen over another's life.

Nancy Moyer isn't there when her kids come home after a weekend away. Then, a random murder occurs nearby soon after - was Nancy murdered by a serial killer?

In 1998, 23-year-old Amy Bradley goes on a family cruise through the Caribbean. After a night out dancing in the ship's disco, she vanishes without a trace.

Rapper Mac Phipps was heading for fame when a young fan was shot and killed at one of his concerts. Mac was convicted of the murder - but was it "southern justice"?

Penny Brummer is accused of murdering her ex-girlfriend's best friend. But Penny had been so drunk she was in a blackout state. Can she prove her innocence?

A single mother is found beaten and strangled in her own home with her four-year-old son present. The investigation that ensues quickly uproots the community.

In rural Missouri, a hunter is found murdered in his car near the popular deer trails. Was this a hunting accident gone wrong, or something more sinister?

A mother raises the alarm when her daughter goes missing. An unusual suspect comes forward to confess, but her story doesn't quite add up.

In the Miami suburbs, a hard-working mother from Trinidad vanishes into thin air. Detectives Danny Smith and Jonathan Zeller soon uncover her secrets.

Journalist Maria Awes teams up with serial killer Todd Kohlhepp's biographer and FBI "Mindhunter" John Douglas to unearth the extent of his murders.

In Arizona, a young woman's body is discovered in a desert river basin. Police wonder if she was a victim of an alleged killer known as The Zombie Hunter.

A teenager uses an app to find others interested in gaming. He strikes up an online friendship with a seemingly vulnerable man, but instead meets his worst enemy.

When investigators suspect a mother's involvement in the death of her two children, Ranger Jim Holland comes in to unearth the truth.

In a small town in Florida, a pastor and his wife take in a young woman from their congregation. But when she disappears, things may not be what they seem.

Tony believes his mother found happiness with Deputy Dave Rogers, until he sees the dark truth a man who uses his badge to terrorize and abuse.

A teenager uses an app to find others interested in gaming. He strikes up an online friendship with a seemingly vulnerable man, but instead meets his worst enemy.

Journalist Maria Awes teams up with serial killer Todd Kohlhepp's biographer and FBI "Mindhunter" John Douglas to unearth the extent of his murders.

Rapper Mac Phipps was heading for fame when a young fan was shot and killed at one of his concerts. Mac was convicted of the murder - but was it "southern justice"?

Penny Brummer is accused of murdering her ex-girlfriend's best friend. But Penny had been so drunk she was in a blackout state. Can she prove her innocence?

A single mother is found beaten and strangled in her own home with her four-year-old son present. The investigation that ensues quickly uproots the community.

In rural Missouri, a hunter is found murdered in his car near the popular deer trails. Was this a hunting accident gone wrong, or something more sinister?

A mother raises the alarm when her daughter goes missing. An unusual suspect comes forward to confess, but her story doesn't quite add up.

In the Miami suburbs, a hard-working mother from Trinidad vanishes into thin air. Detectives Danny Smith and Jonathan Zeller soon uncover her secrets.

Journalist Maria Awes teams up with serial killer Todd Kohlhepp's biographer and FBI "Mindhunter" John Douglas to unearth the extent of his murders.

An Orlando, Florida, man fakes psychosis to avoid responsibility for killing his ex-girlfriend.

A man confesses he "accidentally" killed his best friend while cleaning his gun. During his interrogation, he admits to police he's a serial killer.

A Burlington Township, New Jersey, man kills his girlfriend, but he reveals she is not his first victim.

When a priest from Florida vanishes, police focus on a troubled ex-convict he was helping. A psychopathic killer reveals a twisted vengeance that led to murder.

In rural Missouri, the body of a young woman lies dead on a deserted dirt road only days before her wedding. Police uncover surprising secrets in her fiancé's life.

In 2005, a woman is reported missing when she fails to show up at a Motley Crue concert. To this day, her friends and family wait for her killer to visit her secret grave.

Jamie Lee Arrow reunites with her father to confront him over the infamous murder of his girlfriend.

With chilling tales about the dark side of fame and fortune, friends and researchers reveal Glee star Cory Monteith's final moments.

Misfortune plagues the legacy of Glee, leaving cast and crew wondering whether their hit show is cursed or if misery is the cost of success.

In 2002, a couple goes missing in Maryland. It seems as if they vanished into thin air until a random, late-night burglary leads police to a ghastly discovery.

A young mother begins to wonder if her once-happy, sweet boy is evil, but she could never imagine the true terror her son would become.

At 17, Kianna Galvin leaves home and never returns. Years later, Detective Pam Childs searches for clues to bring her family answers.

Iconic movie henchman, Joseph Son, turns out to be a real-life villain. When prosecutors face off with the actor on the stand, it's hard to tell fact from fiction.

Lloyd Avery portrayed one of Hollywood's most memorable on-screen killers. But when the troubled actor reprises his most famous role, the consequences are deadly.

A young mother begins to wonder if her once-happy, sweet boy is evil, but she could never imagine the true terror her son would become.

In 2002, a couple goes missing in Maryland. It seems as if they vanished into thin air until a random, late-night burglary leads police to a ghastly discovery.

With chilling tales about the dark side of fame and fortune, friends and researchers reveal Glee star Cory Monteith's final moments.

An Orlando, Florida, man fakes psychosis to avoid responsibility for killing his ex-girlfriend.

A man confesses he "accidentally" killed his best friend while cleaning his gun. During his interrogation, he admits to police he's a serial killer.

A Burlington Township, New Jersey, man kills his girlfriend, but he reveals she is not his first victim.

When a priest from Florida vanishes, police focus on a troubled ex-convict he was helping. A psychopathic killer reveals a twisted vengeance that led to murder.

In rural Missouri, the body of a young woman lies dead on a deserted dirt road only days before her wedding. Police uncover surprising secrets in her fiancé's life.

In 2005, a woman is reported missing when she fails to show up at a Motley Crue concert. To this day, her friends and family wait for her killer to visit her secret grave.

Jamie Lee Arrow reunites with her father to confront him over the infamous murder of his girlfriend.

With chilling tales about the dark side of fame and fortune, friends and researchers reveal Glee star Cory Monteith's final moments.

Misfortune plagues the legacy of Glee, leaving cast and crew wondering whether their hit show is cursed or if misery is the cost of success.

In June 1977, a horrifying triple homicide at an all-girls summer camp shocks Tulsa, Oklahoma. Police lead a manhunt for the vicious predator.

On any street, behind any smile, may lurk an American Monster. Now, with never-before-seen "off duty" home movie footage, look into the eyes of a killer, hidden in plain sight.

In 2005, a monster stalks the summer streets of Phoenix. As the body count keeps rising, can the police catch the killer before he strikes again?

Couples are devastated when their big day is ruined by wedding planner scammer Dana Twidale. She conned dozens of couples before going on the run.

Wayne Johncock is scammed out of £180,000 by his neighbour, Rajesh Ghedia. As Ghedia's lies unravel, police discover that Wayne is not his only victim.

A woman adopts a 6-year-old on an online re-homing forum for children but is horrified when she discovers two of the children may have fallen into the clutches of a child abuser.

50-year-old Beverly Carter is an internet savvy real-estate agent, but when she goes to meet a prospective buyer at a remote house, she goes missing.

Trusted crime journalists reveal the shocking twists and unexpected resolutions that occurred while they were investigating high-profile crime cases.

True crime superstar Lt. Joe Kenda showcases a homicide detective who put everything on the line to solve a case, and their efforts to find justice.

In Liverpool, new recruit Chico finds a huge stash of cannabis up an alleyway, helping his handler PC Bartley disrupt a major drugs operation.

A young mother begins to wonder if her once-happy, sweet boy is evil, but she could never imagine the true terror her son would become.

The story of the mother and daughter relationship of Dee Dee and Gypsy Rose Blanchard.

True crime superstar Lt. Joe Kenda showcases a homicide detective who put everything on the line to solve a case, and their efforts to find justice.

A woman adopts a 6-year-old on an online re-homing forum for children but is horrified when she discovers two of the children may have fallen into the clutches of a child abuser.

In June 1977, a horrifying triple homicide at an all-girls summer camp shocks Tulsa, Oklahoma. Police lead a manhunt for the vicious predator.

On any street, behind any smile, may lurk an American Monster. Now, with never-before-seen "off duty" home movie footage, look into the eyes of a killer, hidden in plain sight.

In 2005, a monster stalks the summer streets of Phoenix. As the body count keeps rising, can the police catch the killer before he strikes again?

Couples are devastated when their big day is ruined by wedding planner scammer Dana Twidale. She conned dozens of couples before going on the run.

Wayne Johncock is scammed out of £180,000 by his neighbour, Rajesh Ghedia. As Ghedia's lies unravel, police discover that Wayne is not his only victim.

A woman adopts a 6-year-old on an online re-homing forum for children but is horrified when she discovers two of the children may have fallen into the clutches of a child abuser.

50-year-old Beverly Carter is an internet savvy real-estate agent, but when she goes to meet a prospective buyer at a remote house, she goes missing.

The bodies of a mother and daughter are found in Charlottesville. Investigators discover a secret online relationship that might be the key to finding the murderer.

A single mother is found dead in an apparent suicide. However, the absence of a gun at the crime scene leads police down a trail of dark secrets.

Police arrest an attorney when he shows up to court in street clothes. A judge's affair with a witness is exposed, and a public defender fends off an attack.

An attorney faces accusations of coercing sex in exchange for legal services. Plus, a court deputy body slams a man at security for a presumed threat.

A massive brawl breaks out in a courthouse after an accusation of snitching ends in murder. And, a judge challenges an attorney to a fight in the hallway.

Inmate Jessica Boomershine makes an ill-fated attempt to escape a holding cell. Plus, a 72-year-old attorney is tackled to the ground by five deputies.

In 2004, a concert is interrupted when a man pulls out a gun, opens fire and takes a hostage. As fans flee, a police officer faces an active shooter without backup.

In 2009, one woman's painful struggle to overcome addiction and help others is thwarted when police performing a routine wellness check make a sinister discovery.

When four people are found dead at a house in Texas, investigators believe the murders may never be solved, until an eyewitness gets in touch.

When a teenage girl is murdered, police hope for a straightforward case. But it goes on for months, until a piece of gum points to an unlikely suspect.

In 1990, a clown delivering flowers and balloons guns down a woman at home. With scant evidence, the culprit eludes justice for thirty years.

A mother calls on Texas Ranger Jim Holland, desperate for his help to solve the cold case murder of her son Joseph, executed in the East Texas woods.

A young mother begins to wonder if her once-happy, sweet boy is evil, but she could never imagine the true terror her son would become.

True crime superstar Lt. Joe Kenda showcases a homicide detective who put everything on the line to solve a case, and their efforts to find justice.

In Liverpool, new recruit Chico finds a huge stash of cannabis up an alleyway, helping his handler PC Bartley disrupt a major drugs operation.

A mother calls on Texas Ranger Jim Holland, desperate for his help to solve the cold case murder of her son Joseph, executed in the East Texas woods.

In 1990, a clown delivering flowers and balloons guns down a woman at home. With scant evidence, the culprit eludes justice for thirty years.

When four people are found dead at a house in Texas, investigators believe the murders may never be solved, until an eyewitness gets in touch.

The bodies of a mother and daughter are found in Charlottesville. Investigators discover a secret online relationship that might be the key to finding the murderer.

A single mother is found dead in an apparent suicide. However, the absence of a gun at the crime scene leads police down a trail of dark secrets.

Police arrest an attorney when he shows up to court in street clothes. A judge's affair with a witness is exposed, and a public defender fends off an attack.

An attorney faces accusations of coercing sex in exchange for legal services. Plus, a court deputy body slams a man at security for a presumed threat.

A massive brawl breaks out in a courthouse after an accusation of snitching ends in murder. And, a judge challenges an attorney to a fight in the hallway.

Inmate Jessica Boomershine makes an ill-fated attempt to escape a holding cell. Plus, a 72-year-old attorney is tackled to the ground by five deputies.

In 2004, a concert is interrupted when a man pulls out a gun, opens fire and takes a hostage. As fans flee, a police officer faces an active shooter without backup.

In 2009, one woman's painful struggle to overcome addiction and help others is thwarted when police performing a routine wellness check make a sinister discovery.

When four people are found dead at a house in Texas, investigators believe the murders may never be solved, until an eyewitness gets in touch.

When a teenage girl is murdered, police hope for a straightforward case. But it goes on for months, until a piece of gum points to an unlikely suspect.

When a high school teacher is gunned down in Arizona after a night out, the community is shocked. Officers think they've found the killer, until a new witness emerges.

Detectives investigate the death of a teenager with special needs in New York. Body cam video and original audio capture detectives' hunt for what happened.

31-year-old violinist Helen Mintiks is found murdered in an airshaft at the Metropolitan Opera House. Could there be a real life Phantom of the Opera?

When the body of Vaudeville producer Ray Radin is found, police are at a loss. Is his death the due to a film deal gone bad or dealings with a drug cartel?

The Watermans are loved in their small village. But when human remains are discovered in the forest, clues start to point to the unlikeliest of murder suspects.

The Mengel family is living the American Dream. But beneath the surface, Kevin and Morgan are trying to hide secrets of lust, betrayal and ultimately murder.

One evening after bowling practice, 9-year-old Stephanie Crane never arrives home. For years, she remains missing. Will advances in evidence testing solve the mystery?

When Tyarra Williams vanishes, tips suggest she may have fallen prey to human trafficking. Does someone in the community know more than they're letting on?

In 2001, the shooting of a soccer mom leaves her five children divided over who killed her.