In Gainesville, Fla., cold case detectives track a killer who is suspected in the deaths of two women and find his logbook of murder.

A series of detectives devote 30 years to solving the brutal rape and murder of a high school student

After nearly 30 years, a veteran detective solves a cold case involving the murder of a young man in his home with the help of a witness who saw the killer leaving the crime scene.

Two women are killed on the same dirt road, but police struggle to solve the murders until a third attack takes place.

While investigating the shooting deaths of newlyweds Gail and Rick Brink, detectives go down a dark path that leads to a shocking motive and an unexpected killer.

A single clue will eventually lead police to a surprising suspect in the case of a well-liked man found murdered in his truck.

In Michigan, two women and a baby are found murdered in a burning house, and it will take police more than 30 years to bring the killer to justice.

In Scottsdale, Ariz., a homicide case that will take 30 years to solve begins with 14-year-old Greg Holman's failure to show up for dinner.

A mummified corpse is found in an abandoned rock quarry, but it will take 23 years for investigators to identify the victim, dubbed "Marvin the Mummy," and bring his killer to justice.