Innocent Bystander: When a drug dealer and his girlfriend are found murdered in their apartment, a bloody print leads investigators to a killer who defies belief. (S3, ep 3)

Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 2)

Deadly Accusation: When Virginia Beach detectives were called to the scene of a bloody double homicide in May 1996, they uncovered a murder plot too strange to believe. (S7, ep 2)

Vanished in Reno: When a young university student is abducted from a friend's home in the middle of the night, the city of Reno, Nevada lives in fear of who might be next. (S6, ep 2)

Christmas Mourning: In 1988, Beverly Eller was found murdered in her home. Years went by before a piece of evidence surfaced that tied an unlikely suspect to the crime. (S5, ep 2)

The Perfect Suspect: Detectives investigate the mysterious death of a Chicago woman whose body was found dumped on a Wisconsin highway in 1995. (S4, ep 2)

Left For Dead: In 1997, Henry Caneva was found dead after he and his wife were attacked in their home. With little to no evidence, how did investigators nab his killer? (S3, ep 2)

Series exploring some of the most baffling and challenging investigations in modern law enforcement. (S8, ep 1)

Murder in the Mirror: The crime documentary series returns with a look at the brutal 2006 murder of 80-year-old grandmother Bernita 'Billie' Cunningham. (S7, ep 1)

Wicked Impulse: In 1997, a California mountain town is stunned by the murder of a longtime resident. Months of dogged investigation bring the case to a shocking conclusion. (S6, ep 1)