Investigation Discovery HD TV Guide and Schedule

48 Hours

Photos discovered on an old cell phone help solve the disappearance of a 14-year-old girl.

Signs of a Psychopath

An emotional 911 call comes in from a young man claiming he just found his mother and dog murdered in their home; once his interview with detectives begins, they uncover a parasitic psychopath who will do anything to get away with the crime.

Signs of a Psychopath

A small SD card contains horrifying images and videos of a woman's murder; when someone gives it to Anchorage police, detectives come face-to-face with a sexual psychopath who has a shocking tale to tell.

Toxic

Yeardley Love is days from graduation when her UVA lacrosse player boyfriend, George Huguely, breaks into her room and kills her; Elizabeth Chambers examines the warning signs, missed intervention, and the legacy her family builds from tragedy.

Lethally Blonde

Bridget Shiel, a 19-year-old escort and rap video dancer, meets a brutal end in 2016 when someone shoots her and leaves her naked in an Atlanta park.

Signs of a Psychopath

An emotional 911 call comes in from a young man claiming he just found his mother and dog murdered in their home; once his interview with detectives begins, they uncover a parasitic psychopath who will do anything to get away with the crime.

Signs of a Psychopath

A small SD card contains horrifying images and videos of a woman's murder; when someone gives it to Anchorage police, detectives come face-to-face with a sexual psychopath who has a shocking tale to tell.

Toxic

Yeardley Love is days from graduation when her UVA lacrosse player boyfriend, George Huguely, breaks into her room and kills her; Elizabeth Chambers examines the warning signs, missed intervention, and the legacy her family builds from tragedy.

Lethally Blonde

Bridget Shiel, a 19-year-old escort and rap video dancer, meets a brutal end in 2016 when someone shoots her and leaves her naked in an Atlanta park.

48 Hours

Photos discovered on an old cell phone help solve the disappearance of a 14-year-old girl.

The Playboy Murders

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.

The Playboy Murders

As a Playboy Bunny, Jackie Hendrickson is forbidden from fraternizing with her customers; Atlanta plastic surgeon Dr. Warren Brown is impossible to resist, and their illicit affair sets off a deadly chain of events.

Grave Mysteries

Thirty-two-year-old Becky Brosnan goes missing; while a Myspace message says she's left to find herself, everyone says Becky would never abandon her children; now, detectives must piece together Becky's life to uncover what really happened to her.

Grave Mysteries

Twenty-eight-year-old Michael Sandy is an interior designer living in Williamsburg, Brooklyn; Michael loves music and making new friends on the internet; but his habit of trusting strangers he meets on the web will put his life in jeopardy.

Grave Mysteries

Mikarah Sanders is shot in a home invasion on New Year's Eve; police dive into Sanders' digital world, learning that the killer has been under their noses all along, driven by rage to commit a shocking crime of passion.

Grave Mysteries

A couple returns home from a trip to find blood everywhere, signs of struggle and their teenage daughter missing; police stumble across her charred remains in the desert; digital clues soon lead police to a shocking secret and a deadly betrayal.

Diabolical

After her home is invaded and her husband murdered, Shaunna Dodd recounts her harrowing ordeal at gunpoint; however, when investigators dig deeper, they uncover a tale of lies, infidelity and shady characters who have wandered into the Washoe Valley.

Diabolical

Donna Scrivo hasn't seen her adult son, Ramsay, in days, and she's worried; she alerts the police, but days pass with no sign of him anywhere; then the discovery of a severed head and body parts along a highway reveals an act of shocking violence.

Diabolical

After Cynthia Roth drowns in the middle of a crowded lake, investigators uncover a decades-long trail of terror; detectives must take extraordinary measures to catch the killer.

Diabolical

In 2015, Detective Scott Sanderson finds himself investigating one of the strangest cases of his career, involving a missing woman and her newborn; before long, he uncovers a diabolical scheme that will destroy the lives of everyone it touches.

American Monster

Family comes first to grandparents Ron and Kay Wilson; though they may not have much money, their growing brood always knows how to make their own fun; something evil is prowling close to home and not everyone makes it out alive.

American Monster

Police officer Albert Pacheco and his wife Cathy live on Hawaii's Big Island, raising four kids in the bosom of their close-knit church community; what looks like a household steeped in traditional goodness is hiding something evil.

American Monster

Christy Blankenship is stolen from her family on what should be a joyous day, when police find her dead at home, with a gunshot wound to her head; her husband insists it's a terrible accident.; only that morning he had vowed 'til death do us part.

American Monster

When Jeff Silvernail returns home to find his partner, Lori, dead in a pool of blood, it appears to be a burglary gone horribly wrong; investigators must uncover whether Jeff is a heartbroken partner or a monster who couldn't cope with rejection.

American Monster

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 Serial Killer Connection

Following a serial killer's military postings, Bonnie and Kara investigate murders in Maine, possible victims in San Diego, and chilling evidence in Virginia suggesting the serial killer's crimes stretched far beyond those officially known.

The Serial Killer Connection

Bonnie and Kara confront the final chapter of their investigation as survivors identify a notorious serial killer, investigators revisit his known victims, and the women reflect on their search for justice after decades of unanswered questions.

A Body in the Basement

Detectives investigate a grandmother's death after a mysterious basement fire and discover the killer may be closer than anyone imagined.

The Serial Killer Connection

Following a serial killer's military postings, Bonnie and Kara investigate murders in Maine, possible victims in San Diego, and chilling evidence in Virginia suggesting the serial killer's crimes stretched far beyond those officially known.

The Serial Killer Connection

Bonnie and Kara confront the final chapter of their investigation as survivors identify a notorious serial killer, investigators revisit his known victims, and the women reflect on their search for justice after decades of unanswered questions.