Investigation Discovery

A gunman shoots William Walker, lieutenant of the Cleveland Fire Department, in his own driveway.

A father's desperate search for his pregnant daughter leads him to an abandoned cabin in rural Canada; when police come in to investigate, a crucial surprise witness helps expose unspeakable crimes.

A beloved pastor and his wife rent a cabin to get away from it all but a vicious attack leaves one deceased and the other nursing their wounds at the hospital; an investigation into the couple's past reveals a laundry list of suspects and misdeeds.

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

Tragedy strikes a mountain community when a beloved resident, 71-year-old Jack Irwin, disappears without a trace; strange crimes and a compelling wiretap operation plague the old cabin where Jack used to live.

A young woman cozies up with her new boyfriend at his remote cabin but has no idea who he really is or what he's done; he reveals his violent side, and she must dig deep in the hopes of surviving every scenario he throws at her.

When a cosmetology student goes missing from Dubuque, Iowa, detectives question if her disappearance connects to the murder of a woman found nearby; suspicion surrounds a remote cabin on Stumpf Island.

On Friday the 13th, a teen obsessed with Satan and serial killers terrorizes a small Texas town; survivors fight to stay alive as police race to stop him before dawn during a night-long rampage that leaves the town forever changed and scarred.

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

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

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.

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.

A young woman vanishes after entering a patrol car; for 35 years, she's a Jane Doe; as fear and rumors consume a small town, a chilling clue under hypnosis cracks the case open-and exposes a predator no one saw coming.

On Friday the 13th, a teen obsessed with Satan and serial killers terrorizes a small Texas town; survivors fight to stay alive as police race to stop him before dawn during a night-long rampage that leaves the town forever changed and scarred.

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

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

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.

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.

Niagara Falls cops find 72-year-old realtor Bruce Firman bludgeoned to death with a pipe.

Andrew Kissel, a confessed fraudster, is found stabbed to death in the basement of his Connecticut home; detectives must unravel every detail from the previous 24 hours and, in doing so, come up with a long list of suspects.

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.

Andrew Kissel, a confessed fraudster, is found stabbed to death in the basement of his Connecticut home; detectives must unravel every detail from the previous 24 hours and, in doing so, come up with a long list of suspects.

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.

Andrew Kissel, a confessed fraudster, is found stabbed to death in the basement of his Connecticut home; detectives must unravel every detail from the previous 24 hours and, in doing so, come up with a long list of suspects.

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.

When a husband discovers his wife and two children brutally murdered, police begin to suspect the killer is someone they've arrested before; one year prior, a disturbed teenager terrorizes a family for months by hiding in a most unlikely place.

A house on Elm Street goes up in flames; inside, firefighters discover two bodies impaled with swords; police quickly identify the male victim, but the female victim remains a mystery.

During a street festival, detectives discover the body of a young man hidden inside a trash can; with few leads to go on and suspects at every turn, police aren't sure who they can trust and who the next one is.

Investigators respond to calls of an attack on a man in front of a house on Elm Street; they discover a quadruple homicide; detectives soon discover there is more to these murders than meets the eye, involving torture, revenge and even Satan.

What started as small-town hijinks leads two teenagers to go missing on Thanksgiving; when investigators get a phone call from a man who claims he is responsible for the deaths while defending his home, they must determine truth from madness.

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 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.

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?

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.

The day before Christmas Eve, police answer a call to find two women bound and suffocated and no sign of forced entry; they learn the victims owned most of Elm Street - and the killer may be closer than anyone dares to imagine.

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.

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?

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.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

A volunteer police officer is shot dead in her suburban Dallas home.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

A volunteer police officer is shot dead in her suburban Dallas home.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

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 young man's confession to participating in a plot to murder another teenager stuns police in a small Florida town; detectives uncover a plot involving a manipulative ex-girlfriend and a young psychopath with the desire to kill.

A teenage girl goes missing just before Christmas; detectives obtain a secret recording that uncovers an evil plot by a psychopath willing to do whatever it takes to satisfy their wicked needs and evil desires.

After the murder of a successful executive one night in Connecticut, her case goes cold; four years later, a troubled man appears, ready to confess; investigators uncover this was no ordinary murder and that he's an impulsive psychopath.

A husband becomes the prime suspect when his wife goes missing as police discovers his checkered past; lacking a body or evidence of foul play, detectives hope to gain a confession from a man they realize might be a cold-blooded psychopath.

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.

A Russian immigrant's stabbing leads to his wife: beautiful, charming, and lethal; a runaway teen aids her boyfriend in slaughtering grandparents, as manhunts close in, both women's facades crumble, revealing the chilling minds of killers.

Detective Rick Buckner has to prove Keith Jesperson is the serial killer known as Happy Face Killer, guilty of murdering a woman in 1995, and has to make sure he is apprehended before he kills again.

Detective Rick Buckner has to prove Keith Jesperson is the serial killer known as Happy Face Killer, guilty of murdering a woman in 1995, and has to make sure he is apprehended before he kills again.

Behind closed doors, India Mackey's relationship with her boyfriend is painful; one day after her 20th birthday, India learns what he is truly capable of.

Detective Rick Buckner has to prove Keith Jesperson is the serial killer known as Happy Face Killer, guilty of murdering a woman in 1995, and has to make sure he is apprehended before he kills again.

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

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

Detective Rick Buckner has to prove Keith Jesperson is the serial killer known as Happy Face Killer, guilty of murdering a woman in 1995, and has to make sure he is apprehended before he kills again.

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

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 young man's confession to participating in a plot to murder another teenager stuns police in a small Florida town; detectives uncover a plot involving a manipulative ex-girlfriend and a young psychopath with the desire to kill.

A teenage girl goes missing just before Christmas; detectives obtain a secret recording that uncovers an evil plot by a psychopath willing to do whatever it takes to satisfy their wicked needs and evil desires.

After the murder of a successful executive one night in Connecticut, her case goes cold; four years later, a troubled man appears, ready to confess; investigators uncover this was no ordinary murder and that he's an impulsive psychopath.

A husband becomes the prime suspect when his wife goes missing as police discovers his checkered past; lacking a body or evidence of foul play, detectives hope to gain a confession from a man they realize might be a cold-blooded psychopath.

Behind closed doors, India Mackey's relationship with her boyfriend is painful; one day after her 20th birthday, India learns what he is truly capable of.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

Philadelphia police officers find four adults locked in a filthy basement dungeon as the investigation leads detectives across four states, resulting in multiple felony arrests; all evidence points to a single ringleader behind a deadly scheme.

When friends find Brad McGarry shot to death in the basement of his Bellaire, Ohio home, evidence suggests a robbery; when detectives learn that Brad is an openly gay man working in the world of coal mining, a more complicated motive emerges.

When Michigan hair stylist Kevin Bacon goes missing, his friends and family are concerned; when police unlock Kevin's cell phone, they discover clues to his whereabouts; it leads them to a remote house and a basement dungeon.

On a hot summer night in Springfield, Mass., a seemingly routine traffic stop turns into a nightmare when officers unknowingly apprehend a serial killer; they discover a torture chamber and several murdered women in a quaint suburban home.

In 2021, in a Norman, Oklahoma basement, police unwrap the gruesome contents of a suspicious box.

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

A nurse is shot dead in her apartment; investigators note unusual findings, raising doubt about whether it was a self-inflicted act or something more sinister.

After a fire breaks out, police find a freshman amid the ashes, brutally beaten and burned alive; the hunt for the evil killer on campus is on.

A couple's first date ends with a home invasion and a shooting, leaving one dead while the other barely survives.

When a student goes into full arrest in the basement of a frat house, the cops have to find out if the death was an accident or something more sinister.

After a fire breaks out, police find a freshman amid the ashes, brutally beaten and burned alive; the hunt for the evil killer on campus is on.