Investigation Discovery

In Colorado, a driver opens fire and sparks a chase; in Ohio, a man ignites a daylight shootout; in Florida, deputies race to find a missing boy.

A shooter guns down a soldier at home, but behind the tragedy lies a family torn apart by sex, manipulation and secrecy; investigators uncover a hidden world of sex parties, swinging and betrayal that culminates in a deadly act by a young killer.

Police trace a trail of blood in an attempt to catch a cold and calculating killer.

A young mother is murdered inside her home, and her family hopes to help put her killer behind bars.

After the murder of a university professor in bed, police find that the killing is not a crime of passion; detectives uncover six failed murder attempts and a chilling conspiracy between a daughter and her mother that pushes obsession to deadly extremes.

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

A small town diner is robbed, and the owner murdered; there's only one witness, and just because it's a bird doesn't mean it's not talking.

Body parts start turning up after a small town celebrity goes missing.

The story of a successful family caught up in lies and deception, which led to murder; a well-known Miami practice makes more enemies than the owners care to admit.

A small town diner is robbed, and the owner murdered; there's only one witness, and just because it's a bird doesn't mean it's not talking.

Body parts start turning up after a small town celebrity goes missing.

The story of a successful family caught up in lies and deception, which led to murder; a well-known Miami practice makes more enemies than the owners care to admit.

A small town diner is robbed, and the owner murdered; there's only one witness, and just because it's a bird doesn't mean it's not talking.

Body parts start turning up after a small town celebrity goes missing.

The story of a successful family caught up in lies and deception, which led to murder; a well-known Miami practice makes more enemies than the owners care to admit.

Margie Bult sees a fugitive on TV named Paul Steven Mack who resembles her second husband.

When a hole appears in the backyard, Delila Yang gets suspicious; she knows her mother, Karina, dug it and knows someone is missing, but Delila doesn't yet realize she must work with police to trap her mom and unearth her sinister secrets.

Genie already knows Lee Cawthon is capable of horrible things when he forces her into a polygamous relationship; she plays along with his twisted demands, but doesn't realize that the consequences of letting him have his way might be worse.

William Cosden Jr. coerced his much younger sisters, Karen and Susan, into keeping secrets about what he did; now the girls are adults, and with one facing death, they reunite to try to repair the trauma keeping those secrets caused them.

When Linda Bergstrom begins to suspect that her husband James' bondage fetish shifted into something sinister, she can't get anyone to believe her; the more she learns about his behavior, the more she becomes determined to stop her husband.

When Sarita Anderson begins feeling ill, she thinks it's just the flu at first; she never suspects that the man pretending to love and nurse her back to health is actually the monster responsible.

Runway model turned "mom-a-ger" Samira Frasch lives a life of luxury and flamboyance, seemingly out of a fairytale; when she turns up dead at the bottom of her pool, police uncover a marriage filled with infidelities, accusations and deep motives.

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.

Exploring the singer's years of alleged offstage aggression, including intimate-partner violence, assault charges and even sexual assault allegations.

Shocking stories of how online dreams can become blood-soaked nightmares.

Baron Dirty Colon goes on the reality show "From G's to Gents," hoping to change his life and take home the $100,000 prize pot; but he's hiding a huge secret about his real motivation for wanting to join the competition show.

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.