Investigation Discovery +1 Sunday

When a Homecoming Queen and a Dairy Princess are murdered in Marathon County, Wisconsin, detectives question a pool of suspects, from strangers to frenemies

Buying goods from home

Buying goods from home

Buying goods from home

Buying goods from home

The murder of Sherman High School graduate Kimberly Dunnachie in Arlington, Texas, in 2014. Her stepfather and mother, Mike and Dianna Gillum, discuss the incident

The crimes of Donna Yaklich, who gunned down her husband - a Pueblo police officer - in the driveway of his home in December 1985

The case of Colleen Harris, who was convicted of first-degree murder after gunning down her third husband, a former US Forest Service supervisor, in January 2013

The crimes of Rebecca Osborne, who shot and killed second husband Jerry Barker in 1996. It transpired she had earlier shot and injured first husband John Osborne

When a dancer was shot dead in her home, detectives tried to figure out who had a motive to kill her. A cigarette found at the scene was thought to be a clue

A case in which a mother went missing from her home. Suspicion moved from one admirer to another, but a surprise confession seemed set to solve the mystery

The case of teenager LeRyan Nicholson, who went missing in 1998. It wasn't until March 2013, when a DNA sample confirmed a retrieved body was his

When woman stabbed to death in broad daylight, police believed she knew her killer. Plus, how new evidence after a deadly house fire pointed to arson

The case of fun-loving, protective father and grandfather Arthur Burney. One day he walked out on the family after apparently falling in love with a woman

Amanda Schmitt was doing her dream job nannying two children. Her relationship with the father became romantic, but a happy ending did not lie in store

A millionaire doctor and his wife enjoyed a glamorous lifestyle. However, behind closed doors, they were troubled by deceit and violence which eventually turned deadly

The case of cousins Mark Corona and Paul Stoeppler, whose close relationship broke down in a devastating and bloody way

Cindy Monkman is looking for something serious and Michael Apelt seems to be her perfect match, until their first Christmas together turned into a horror story

The murders of two young boys. When the case went cold, their mothers begin their own quest for answers

In 2007, a devastating house fire in Dallas Township, Pennsylvania, reveals the nearly decapitated body of a pornographic film director

A garage with three dead bodies leads detectives to a lurid affair, stories of embezzlement, and a crafty Casanova who mysteriously disappears

After a friend and holiday resort co-worker went missing on a desolate mountain, detectives had to sort through a list of tight-knit colleagues with potential motives for murder

How restaurant co-workers are devastated when one of their own is found dead near a soccer pitch at the edge of their quiet Indiana town

The case of 26-year-old car dealer Christopher O'Brien, who in February 1992 took a man for a test drive and never returned to his Long Island premises

The death of film director Adrienne Shelly, who was found hanging by a bed sheet in her bathroom in November 2006. It looked like a suicide, but her husband insisted it was murder

The murder of successful business owner MaryAnn Clibbery in Illinois. A suspicious bag floating on the ice in the river unlocked the secrets of her slaying

The case of Barbara Howe, who vanished from her retirement community in Ohio in 2015. The body of the 87-year-old was later found in the boot of a car