Full Episodes

Det. Jason Moran re-opens the case of serial killer John Wayne Gacy. Unbelievably, 8 of his 33 victims were unidentified. The grieving family of Chicago boy Bill Bundy, missing for 40 years, wonder if he might have been a victim of The Killer Clown?

Detective Jackie Nichols continues her hunt for an elusive serial killer responsible for the murder and disappearances of five young people in the Lewis Clark Valley. This is her last chance for justice and time is running out.

Watch a sneak peek from the upcoming special \"Susan Powell: An ID Murder Mystery.\" Premieres Wednesday, December 12 at 9/8C only on Investigation Discovery!

Det. Jason Moran re-opens the case of serial killer John Wayne Gacy. Unbelievably, 8 of his 33 victims were unidentified. The grieving family of Chicago boy Bill Bundy, missing for 40 years, wonder if he might have been a victim of The Killer Clown?

Detective Jackie Nichols continues her hunt for an elusive serial killer responsible for the murder and disappearances of five young people in the Lewis Clark Valley. This is her last chance for justice and time is running out.

Between 1979 and 1982, five young people went missing or were found murdered in the Lewis Clark Valley. Decades later, Detective Jackie Nichols picks up the trail and begins her hunt for a serial killer who has evaded justice for over forty years.

Officers find themselves pitted against a lone gunman holed up in a suburban home; the nerve of a rookie cop is tested when a routine stop on the highway goes horribly wrong.

In the great smoky mountains of North Carolina, Billy Carter raises his daughters Crystal and Misty. When a body is found on the scenic Blue Ridge Parkway, this family's piece of paradise becomes a nightmare they relive again and again.

America\'s finest come out of retirement to crack the 31 cold cases of Tulsa County opening two of the most notorious murders: 16-year-old Dena Dean, abducted & murdered in 1998, & 38 year old Veda Woodson, raped & murdered on a deserted road in 1973.

In 1990, the testimony of a 12-year-old boy sealed his father's fate. A jury convicted prominent Ohio doctor John Boyle of murdering Collier's mother. 26 years later, the son returns determined to get an admission of guilt from his imprisoned father.

14-year-old Christie Mullins is murdered in Clintonville, Ohio. The murder is unsolved for forty years until a young woman comes forward to identify her uncle as the killer. He is revealed to have a surprising connection to his victim.

Mid 1980's. A District Attorney in Wichita Falls, Texas has multiple gruesome homicides to solve. A father's grief provokes him to meet his daughter's killer face to face, and over 100 miles away, a husband is accused of the murder of his wife.

In 1984, a couple goes on a brutal killing spree throughout the Midwest. After claiming the lives of 8 victims, the pair must decide if they'll keep killing or surrender to the police. Their mindless violence leaves the region shocked and appalled.

A body is found engulfed in flames in a Los Angeles alley. He's thought to be the victim of brutal gang violence, but a tip soon leads police to the victim's ex. When new evidence is unearthed years later, it's clear the police were dead wrong.