Investigation Discovery

A teen mom's dream of joining the NYPD shifts when a mentor's motives blur.

A New Hampshire town reels after police arrest four teenagers for robbing and murdering a 42-year-old mother and maiming her 11-year-old daughter; detectives uncover two suspects with the characteristics of sadistic psychopaths.

A look inside the mind of psychopaths to discover when common pervasive traits deviate into violence, such as grandiosity, sadism, superficial charm, manipulation, lack of empathy and having a parasitic lifestyle.

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

Behind a church lies a dismembered body burned beyond recognition; investigators identify the victim and receive a tip the suspect is female; a police interview reveals her as the most remorseless psychopathic killer they've ever seen.

A killer shoots a young woman dead in her boyfriend's Orlando, Fla., apartment; hours later, he turns up in a hospital bed 500 miles away with a gunshot wound and a bizarre story that unravels to reveal he's a lying, callous psychopath.

When a priest from Florida goes missing, police focus on a troubled ex-convict whom he helped support; through multiple interrogations, a psychopathic killer reveals details of a twisted vengeance that escalates to a chilling murder.

A gunman shoots a man dead as he runs along a country road, and first responders find a witness standing next to the body with a strange story to tell; detectives unravel the lies of a callous psychopath who takes out his frustrations in bloodshed.

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A sniper attack leaves a teacher from Pennsylvania dead, in a seemingly perfect murder; investigators are forced to look back at the killer's chronology to help them find clues.

A young woman is found floating on a river off Merritt Island in the east of Orlando; the 22-year-old was tied with rope and tape, and her physical appearance leaves clues to the horror of her last moments.

Fifteen-year-old twins come home to find their mother dead in their bathtub; their testimonies lead the investigation, but one detail highlights the troubling truth.

A sniper attack leaves a teacher from Pennsylvania dead, in a seemingly perfect murder; investigators are forced to look back at the killer's chronology to help them find clues.

A young woman is found floating on a river off Merritt Island in the east of Orlando; the 22-year-old was tied with rope and tape, and her physical appearance leaves clues to the horror of her last moments.

Fifteen-year-old twins come home to find their mother dead in their bathtub; their testimonies lead the investigation, but one detail highlights the troubling truth.

A sniper attack leaves a teacher from Pennsylvania dead, in a seemingly perfect murder; investigators are forced to look back at the killer's chronology to help them find clues.

Former child actors Brian Bonsall and Dee Jay Daniels unpack the harsh reality of life after fame, while producers from "Home Improvement" and "That's So Raven" reveal their brush with young stars who ended up behind bars.

For the first time, a former colleague breaks down how one housewife built her multimillion-dollar empire on deception; Taylor Armstrong sheds new light on her husband's alleged abuse and the unsettling rumors that still surround his death.

Former child actors Brian Bonsall and Dee Jay Daniels unpack the harsh reality of life after fame, while producers from "Home Improvement" and "That's So Raven" reveal their brush with young stars who ended up behind bars.

Religious leader Gene Spriggs creates a movement in Tennessee with teenagers and disenchanted hippies called the Twelve Tribes; the Tribes become a cult with accusations of child abuse, forced labor and a devotion to what they claim is God's will.

Outside of Orlando, life is no longer a fairytale for childhood sweethearts Mike and Laurie Shaver; fighting and infidelities lead to shattered vases and broken dreams; when police search their backyard in 2018, what they find scars the family.

Fame, passion, and greed collide in a Hollywood hairstylist's murder.

Outside of Orlando, life is no longer a fairytale for childhood sweethearts Mike and Laurie Shaver; fighting and infidelities lead to shattered vases and broken dreams; when police search their backyard in 2018, what they find scars the family.

A young mom's new beginning darkens as uneasy figures close in on her.

In rural Pennsylvania, an elderly widow's extreme fear of being buried underground leads her to make an unthinkable decision; for years, her small town keeps her secret, but when investigators finally arrive, they uncover more questions than answers.

For the first time, a former colleague breaks down how one housewife built her multimillion-dollar empire on deception; Taylor Armstrong sheds new light on her husband's alleged abuse and the unsettling rumors that still surround his death.

In rural Pennsylvania, an elderly widow's extreme fear of being buried underground leads her to make an unthinkable decision; for years, her small town keeps her secret, but when investigators finally arrive, they uncover more questions than answers.

A young woman is found floating on a river off Merritt Island in the east of Orlando; the 22-year-old was tied with rope and tape, and her physical appearance leaves clues to the horror of her last moments.

Fifteen-year-old twins come home to find their mother dead in their bathtub; their testimonies lead the investigation, but one detail highlights the troubling truth.

An 18-year-old woman from Staten Island meets her demise after entering the dangerous world of internet dating, and the media spins her secrets into scandals.

A community is in distress when a woman is found clubbed to death in her home, and investigators attempt to reconstruct her final hours.

An 18-year-old woman from Staten Island meets her demise after entering the dangerous world of internet dating, and the media spins her secrets into scandals.

A community is in distress when a woman is found clubbed to death in her home, and investigators attempt to reconstruct her final hours.

An 18-year-old woman from Staten Island meets her demise after entering the dangerous world of internet dating, and the media spins her secrets into scandals.

When Jason Worley tries to escape from Brandi by filing for divorce, she punishes him by taking away the two things most precious to him.

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

LaTonya believes her husband, Nathan, is her best friend; over the years she suffers emotional abuse at his hands and decides to take their kids and leave; Nathan refuses to let go, leading to a night of terror that ends in a tragedy and a miracle.

Andrea believes that Ray Clark is the man of her dreams; but when she reveals she's pregnant, Ray becomes a nightmare; he stalks her and tortures their infant son; Andrea and her baby narrowly escape, but the next woman Ray meets isn't so lucky.

Renee wonders why her brother, Ricky, targets her; thankfully, her oldest brother, Ronnie, protects her and keeps Ricky in check; after years of his cruelty, they've had enough of him and fight back; that's when Ricky plots his revenge.

When Christina meets Loren, she's looking for love and an escape from a troubled home; after his dark side emerges, Christina thinks she's the lone target of his rage; a trail of clues reveals that Loren and his best friend are serial killers.

As Christy Foe copes with multiple family tragedies, her childhood crush, Joel Lauper, comes to the rescue; his arrival is no blessing, and she finds herself fighting for her life and confronting evil to not only save herself, but others as well.

An illicit tryst in Alaska results in two dead bodies and a woman with multiple shot wounds. Proof that affairs rarely end well.

People recount their true stories about living with evil family members.

A school teacher goes missing. Her 3-year-old daughter, with bare, bloodied feet, is the only witness. However, what does she know?

As Christy Foe copes with multiple family tragedies, her childhood crush, Joel Lauper, comes to the rescue; his arrival is no blessing, and she finds herself fighting for her life and confronting evil to not only save herself, but others as well.

People recount their true stories about living with evil family members.

A school teacher goes missing. Her 3-year-old daughter, with bare, bloodied feet, is the only witness. However, what does she know?

An illicit tryst in Alaska results in two dead bodies and a woman with multiple shot wounds. Proof that affairs rarely end well.

Renee wonders why her brother, Ricky, targets her; thankfully, her oldest brother, Ronnie, protects her and keeps Ricky in check; after years of his cruelty, they've had enough of him and fight back; that's when Ricky plots his revenge.

When Christina meets Loren, she's looking for love and an escape from a troubled home; after his dark side emerges, Christina thinks she's the lone target of his rage; a trail of clues reveals that Loren and his best friend are serial killers.

People recount their true stories about living with evil family members.

A community is in distress when a woman is found clubbed to death in her home, and investigators attempt to reconstruct her final hours.

Thugs botch multiple kidnapping and murder attempts on their first target, then they accidentally kill their second target before getting any money out of him.

Two brothers murder their friend for his "Magic: The Gathering" cards and decide to use the money they get from selling them to buy the materials to hide the body.

Possessed by the spirit of a murder victim, a woman with no psychic abilities names the killer, leading police to a suspect.

A man ends an affair with his married girlfriend and takes up with a younger woman, prompting his jilted lover to poison his leftovers.

Thugs botch multiple kidnapping and murder attempts on their first target, then they accidentally kill their second target before getting any money out of him.

Two brothers murder their friend for his "Magic: The Gathering" cards and decide to use the money they get from selling them to buy the materials to hide the body.

Possessed by the spirit of a murder victim, a woman with no psychic abilities names the killer, leading police to a suspect.

A man ends an affair with his married girlfriend and takes up with a younger woman, prompting his jilted lover to poison his leftovers.

Thugs botch multiple kidnapping and murder attempts on their first target, then they accidentally kill their second target before getting any money out of him.

Two brothers murder their friend for his "Magic: The Gathering" cards and decide to use the money they get from selling them to buy the materials to hide the body.

Possessed by the spirit of a murder victim, a woman with no psychic abilities names the killer, leading police to a suspect.

A man ends an affair with his married girlfriend and takes up with a younger woman, prompting his jilted lover to poison his leftovers.

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

A farmhand goes missing from a sprawling cattle ranch, but the case takes a sinister turn when his body shows up miles down the Coweeman river.

When a young woman turns up dead in south Texas, Captain Federico Calderon fears the killer has disappeared into Mexico; as more bodies turn up, investigators pick up on the trail of a serial killer, leading to a showdown in the streets of Laredo.

After multiple homicides occur along Virginia's Colonial Parkway, authorities task Det. Danny Plott with finding a serial killer; investigators uncover a pattern at the crime scenes about the killer's method, becoming the key to solving the case.

Jacksonville, Fla. Deputies locate the bones of a missing woman; as Det. Mechelle Soehlig pieces together the victim's final steps, a trail of clues leads her from the site of a late-night house party to a mysterious Icelandic biker known as Viking.

The Always Hope adoption center, run by Tara Lynn Lee, falls under suspicion of multiple families who are all left heartbroken after their adoptions fall through; the FBI begins to uncover a heartbreaking multi-state scam like no other.

In 2015, Jerrica Laws vanishes from her home in Park Forest, Ill.; as Detective Pam Childs reopens the case, she uncovers Jerrica's secret world, including cryptic messages, a mysterious meeting and a question about what Jerrica was hiding.

In Connecticut, an employee arrives at his bank with a bomb strapped to him, claiming he will die if not given money; in Tennessee, bank employees begin robbing their own banks, each claiming they have been held hostage and forced into the crime.

Around midnight on October 9, 2017, Marlo Gulley vanishes from Chicago's South Side, and police tie his case to three violent crimes; Detective Childs joins Marlo's family to challenge the official narrative and seek the truth.

The Always Hope adoption center, run by Tara Lynn Lee, falls under suspicion of multiple families who are all left heartbroken after their adoptions fall through; the FBI begins to uncover a heartbreaking multi-state scam like no other.

In Connecticut, an employee arrives at his bank with a bomb strapped to him, claiming he will die if not given money; in Tennessee, bank employees begin robbing their own banks, each claiming they have been held hostage and forced into the crime.

Around midnight on October 9, 2017, Marlo Gulley vanishes from Chicago's South Side, and police tie his case to three violent crimes; Detective Childs joins Marlo's family to challenge the official narrative and seek the truth.

In 2015, Jerrica Laws vanishes from her home in Park Forest, Ill.; as Detective Pam Childs reopens the case, she uncovers Jerrica's secret world, including cryptic messages, a mysterious meeting and a question about what Jerrica was hiding.

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

A farmhand goes missing from a sprawling cattle ranch, but the case takes a sinister turn when his body shows up miles down the Coweeman river.

Around midnight on October 9, 2017, Marlo Gulley vanishes from Chicago's South Side, and police tie his case to three violent crimes; Detective Childs joins Marlo's family to challenge the official narrative and seek the truth.

A woman is killed and her body left in her son's bed, but investigators look deeper into her murder when her son is stabbed 18 times to the chest upon his return home.

Investigators look into a double homicide in New York, and struggle to contain the media.

A mysterious vagabond is among the list of potential suspects in the case of a murdered woman from New Hampshire; a missing persons report yields a crucial piece of information.

A woman is killed and her body left in her son's bed, but investigators look deeper into her murder when her son is stabbed 18 times to the chest upon his return home.

Investigators look into a double homicide in New York, and struggle to contain the media.

A mysterious vagabond is among the list of potential suspects in the case of a murdered woman from New Hampshire; a missing persons report yields a crucial piece of information.

A woman is killed and her body left in her son's bed, but investigators look deeper into her murder when her son is stabbed 18 times to the chest upon his return home.

A savage killer goes on a homicidal rampage and then abducts two young siblings from their home.

Examining the facts of criminal cases that received significant public attention; interviews provide details on evidence and legal outcomes.

Vanessa Bennett saw her family murdered by a hammer wielding stranger when she was three years old; on April 7, 2022, a Jefferson County jury found 61-year-old Alex Ewing guilty of killing Patricia Smith in early 1984.

During an armed robbery, a father of three is fatally shot, but for 23 years, another family questions if the wrong man is behind bars.

One family's American dream goes up in flames; as they try to rebuild what's left, they vow to search for justice.

Detectives must get creative to find their suspect when a Mennonite woman goes missing in January 2020 and forensic evidence from her body leads them to a dead end.

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

A teen, Wanda Musk, vanishes. Police pursue her ex and a local teen as panic takes hold.

In 1995, a teen enrolls in a government trade program and meets a new boyfriend; as he draws her into the occult, tensions rise; when four people walk into the woods on a winter night and only three return, investigators uncover a story.

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

A teen, Wanda Musk, vanishes. Police pursue her ex and a local teen as panic takes hold.

In 1995, a teen enrolls in a government trade program and meets a new boyfriend; as he draws her into the occult, tensions rise; when four people walk into the woods on a winter night and only three return, investigators uncover a story.

A teen, Wanda Musk, vanishes. Police pursue her ex and a local teen as panic takes hold.

A savage killer goes on a homicidal rampage and then abducts two young siblings from their home.

Examining the facts of criminal cases that received significant public attention; interviews provide details on evidence and legal outcomes.

Vanessa Bennett saw her family murdered by a hammer wielding stranger when she was three years old; on April 7, 2022, a Jefferson County jury found 61-year-old Alex Ewing guilty of killing Patricia Smith in early 1984.

In 1995, a teen enrolls in a government trade program and meets a new boyfriend; as he draws her into the occult, tensions rise; when four people walk into the woods on a winter night and only three return, investigators uncover a story.

Investigators look into a double homicide in New York, and struggle to contain the media.

A mysterious vagabond is among the list of potential suspects in the case of a murdered woman from New Hampshire; a missing persons report yields a crucial piece of information.

A Jacksonville firefighter returns home to find his wife's dead body in their bedroom; when he admits to infidelity, he becomes the prime suspect, but investigators are led to the real killer via a stolen car.

Bernadette Myers is found strangled to death in her home in Jacksonville, Florida; clues found at the scene of the crime suggest that her killer was waiting for her when she walked in the door.

A Jacksonville firefighter returns home to find his wife's dead body in their bedroom; when he admits to infidelity, he becomes the prime suspect, but investigators are led to the real killer via a stolen car.

Bernadette Myers is found strangled to death in her home in Jacksonville, Florida; clues found at the scene of the crime suggest that her killer was waiting for her when she walked in the door.

A Jacksonville firefighter returns home to find his wife's dead body in their bedroom; when he admits to infidelity, he becomes the prime suspect, but investigators are led to the real killer via a stolen car.

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.

After taking the pageant world by storm, a Playboy cover model gets up close and personal with fans on the phone; as she competes for playmate of the year, an obsessive fan goes a step too far and her entire world comes crashing down.

The murder of Playboy cybergirl Christina Carlin-Kraft in her Pennsylvania condo takes police on a search for her killer, from the streets of Philadelphia to a psychiatric ward; detectives rely on surveillance video to find the culprit.

When a Playboy party hostess and model is found dead and dismembered in a dumpster, it ignites a tabloid media frenzy; as police investigate her romantic partners, her reality TV star husband heads for the Canadian border.

When a former Playboy bunny's husband is shot dead at home, the investigation reveals sordid affairs, family infighting and a possible hired hit; the search for the truth ultimately leads to multiple suspects, including some close to home.

A local waitress catapults to stardom when featured in a Playboy pictorial; she soaks up the fame and newfound attention until a surprise goes wrong, ending in tragedy, and she becomes a victim in a gruesome double murder.

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.

Three people are killed execution-style in a Louisiana convenience store.

Three people are killed execution-style in a Louisiana convenience store.

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.

Three people are killed execution-style in a Louisiana convenience store.

Three people are killed execution-style in a Louisiana convenience store.