Investigation Discovery Documentaries

When a beeper is found in the snow near an abandoned car belonging to a victim of a violent crime, Colorado detectives are blown away by its link back to one of their own.

When the fittest member of a Las Vegas workout group is found murdered in the desert, his closest friends become the center of the investigation.

When seven people are killed in two separate shootings on a single night in Anchorage, Alaska, detectives find themselves racing to establish a timeline; soon, they realize they're dealing with more than one killer.

After a home invasion ends in murder, detectives question six men in six interrogation rooms; one is the mastermind, while one is the murderer; detectives encourage the suspects to talk to find out who's who.

Cellist Janine Sutphen disappears on her way to symphony practice; as police investigate, Sutphen's sons reveal a secret that could explain their mother's disappearance.

When Gail Masset disappears into the frigid Wisconsin wilderness, police look to a recent stalking incident involving her and two men; then, an anonymous email and another attack reveal the shocking truth.

Joe Vogler, a well-known Alaskan gold miner and outspoken political activist, vanishes without a trace from his remote mountaintop home in Fairbanks, Alaska; detectives must sort through a bevy of conspiracy theories to find the truth.

After a jogger discovers an unidentified woman's body, police are left with few clues with which to find her killer.

Marlin Barnes, a linebacker for the University of Miami, is found murdered in his apartment, along with his friend, Timwanika Lumpkins; detectives must retrace the victims' footsteps to find their killer.

Once thought to be a rising star in the NFL, Rae Carruth falls from grace after conspiring to have his pregnant girlfriend, Cherica Adams, murdered.

In Pittsburgh, a young doctor is found slain in his bathtub, and detectives embark on a chase through the wintry streets to catch the cold and calculated killer before he strikes again.

A man confesses to kidnapping and murdering his 3-year-old child, but a famous criminal defense attorney suspects there may be more to the story.

On a cold Wisconsin night, firefighters discover the bodies of Rachel Thompson and her two children while extinguishing a fire; when police realize a third child is missing, the race is on to solve three murders and a kidnapping.

In a killing that has ritualistic hallmarks, detectives quickly find themselves brushing shoulders with the criminal underworld in pursuit of a mystery biker and the truth.

An in-depth look at the investigation that led to the capture of serial killer Dennis Rader, aka BTK, who terrorized Wichita, Kan., for 30 years; an exploration of his impact on the lives of everyone in his orbit, especially his daughter.

In Massachusetts, single mother Loretta Daniels misses a routine errand run with her sister, causing her family to fear she has fallen victim to the Springfield Strangler.

Two female college students vanish from the close-knit town of San Luis Obispo, Calif.; while clues are elusive, one detective has a hunch he knows who is responsible.

Three masked men terrorize newlyweds in their own home.

Charlie Martin runs from her husband in Colorado and straight into the arms of Joe Pope, her high school sweetheart living in Florida; both are looking to reignite the relationship that ended 20 years earlier, but secrets and lies will prove fatal.

The body of an unknown woman is found in a roadside ditch; a young mother goes missing under mysterious circumstances in a nearby town; both cases go cold until new forensic technology connects them.

When family man Cody Bowles is reported missing by his son in Louisa County, Va., a special task force is eventually put in place to investigate; their search leads them down a twisted trail of violence, identity theft and a double homicide.

The May 3, 2007 disappearance of four-year-old Madeleine McCann sparked one of the largest global missing persons investigations in history. The Missing Pieces looks at two of the McCanns' attempts to find their daughter using unorthodox methods.

A tax attorney prone to violent outbursts at work becomes entangled in a murder mystery.

When a nun is found strangled and stabbed to death on the day before Easter, investigators are forced to look behind church walls in search of a killer.

When pregnant mom, Shanann Watts and her two daughters vanish without a trace, her husband Chris pleads for his family's safe return. But as the investigation digs deeper, dark secrets are revealed and he transforms from family man to monster.