Investigation Discovery HD

In Anchorage, a rebellious teen girl forms a fast friendship with a bubbly newcomer; the picture-perfect friendship soon becomes fractured as a storm of lies, betrayal and manipulation ultimately ends in unspeakable tragedy.

After a single mother fails to show up for work, police find her brutally stabbed and her daughter missing from their home in an affluent gated community; everyone fears she's in danger, but what they uncover is darker than they could have imagined.

While appearing to have it all, wife and mother Sandra Duyst struggles with crippling depression, and her death appears to have been a suicide, but a message from beyond the grave sends the investigation in an unexpected direction.

When mutilated bodies appear around Delaware in 1987, investigators search for the state's first serial killer.

Cody MacPherson moves to New Jersey seeking work and disappears after a night of partying with a new group of friends.

Beloved basketball coach and teacher Jimmy McClain is found brutally murdered in his own home; with no forced entry, police fear Jimmy knew his killer or let the killer inside his house.

When top real estate agent Beverly Carter vanishes after meeting a new client, police must find out if anyone had a reason to harm her.

When South Carolina authorities find Davis McClendon dead by the road near his wrecked car, they suspect a hit-and-run; an oil trail leads them to a local businessman.

A manhunt ensues when John Blauvelt vanishes -- along with his girlfriend -- after his 22-year-old estranged wife, Cati, is murdered.

"48 Hours" began as a documentary in 1986 and became a regular series two years later. It was built around a team of correspondents covering one subject for 48 consecutive hours. Over time it evolved into the premiere broadcast for law, crime and justice stores -- its journalists, for example, have been credited with uncovering new information that has led to high-profile cases being overturned an

The murders of two teen girls at a remote and scenic lookout point seem random until police uncover a web of secrets among their network of friends.

Lisa Reeves wasn't looking for love when she met Randy Gwathney -- what she got, instead, was bloodshed.

In 1995, when a 14-year-old girl in Happy Valley, Washington, goes missing, detectives uncover a grim family secret.

In 2001, in Cortez, Colo., the violent murder of a gay Navajo teenager means two spirits die with him.

College sophomore Gina Tenney discovers she has a stalker, then comes face to face with her tormentor and realizes she knows him.

On Mother's Day, first-time mother Tennyson Jacobson fights off a violent intruder during her daughter's nap time.

With a new home and loving fiancé, single mother Lisa Filiaggi finally feels as though luck is on her side, then past troubles come back to haunt her and threaten to destroy all her future plans.

In Montana, 22-year-old runner Kari Swenson is abducted by mountain men; when Swenson learns of their twisted plans, she realizes she must do everything in her power to escape or die trying.

As children, Tabitha and Ann endure their brother Terry's twisted games; as adults, they try to cut ties, but their mother, Edwardyne, clings on and is always willing to give him one more chance.

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

When Kristyn escapes her toxic home and rageful mother, she leaves behind her sister and grandmother; it's a decision that still haunts her.

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

When Kristyn escapes her toxic home and rageful mother, she leaves behind her sister and grandmother; it's a decision that still haunts her.

As children, Tabitha and Ann endure their brother Terry's twisted games; as adults, they try to cut ties, but their mother, Edwardyne, clings on and is always willing to give him one more chance.

Police respond to the site of a fiery car crash alongside a Michigan highway, where they discover the badly burned body of a young woman; investigators quickly realize this is no accident but a cold-blooded murder plot.

A 17-year-old steals a gun and begins a horrifying road trip; he murders two gas station attendants in cold blood, laughing as he shoots his victims in the face; when officers catch up with him, a haunting portrait of a burgeoning psychopath emerges.

A failed actor returns home, ready to take out his rage on the weakest members of society; after killing four people, a chance encounter with police leads to his downfall; the interrogation room becomes the stage for this killer's final performance.

First responders arrive at a home in Ontario, where a mother leads officers to the dead bodies of her two children; an investigation yields a twisted truth: this tragedy isn't an accident but a carefully crafted killing by a vengeful psychopath.

When a 5-year-old girl describes her mother's killer as being a ninja, police puzzle out the truth behind the child's description as they put the murderer behind bars.

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

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

In August 1992, millionaire Tennessee landowner Allen Roberts arrives home to discover his wife is missing; he tells police he received a ransom call for Doe's safe return; slowly, the town turns on Allen, until police take note of one odd neighbor.

Alexis Murphy, who is a rising social media star and high school athlete, disappears along the infamous Route 29 in August of 2013; a massive search by local and federal authorities yields zero results, until a security video reveals a chilling clue.

Alisha Sidie disappears from a small vacation town in Wisconsin in 2008; family, friends, local reporters and police investigators recall the fear and sadness the crime instilled on their tight community.

When a killer guns down a rapper outside a New Orleans Waffle House, police use state-of-the-art technology to find the culprit; a string of robberies in Jonesboro, Ark., baffles police until they use video to link the crimes.

In New Mexico, a shooter guns down an unarmed man, and a Real Time Crime Center helps find, chase and capture the culprit; in Florida, an armed man robs one store after another, but police close in on him from the ground and air.

In New Mexico, a mother clings to her car when a carjacker steals it with her babies inside; just before dawn in Arizona, a SWAT team must locate an individual spotted inside a pawn shop packed with guns.

In Texas, a suspect shoots an officer multiple times during a foot chase; the race is on as backup tries to locate the injured officer and track down the assailant.

In Oregon, a man vandalizes "The Goonies" house before stealing a yacht; when the yacht capsizes, it becomes a rescue mission; in Texas, a shootout with police leaves one officer critically injured while the suspect flees in his cruiser.

In Ohio, officers and firefighters rush to save lives after a gas explosion in a tower block; fifty miles across state, a carjacker pulls a mom out of her vehicle, taking off with her kids in the back; in Wisconsin, a bizarre theft of a snowplow.

A shoplifter fires at a police officer and takes him down in Virginia; in New Mexico, deputies pursue armed robbers.

In Arkansas, police chase a stolen U-Haul, leading to a devastating crash and an explosive find; in New Mexico, a fugitive escapes and vanishes inside a hospital; in Washington, a violent carjacking sparks a high-scale pursuit that ends up in the deep.

In 2018, three women held hostage in a motel room by armed men face a night of terror that leaves 19-year-old Amber Meadows lying dead in the bathroom; detectives must follow a trail of surveillance footage to find out who pulled the trigger.

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.

Tracie Bell, a beloved employee of the Cook County State Attorney's Office goes missing on March 6, 2018.

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.