Watch Catch My Killer

Technology assists in a decades-old cold case involving the murder of a teenage girl.

In 1980 Marlene Major disappears; her family suspects she ran to escape her abusive husband.

The skull of 13-year-old Heather Church is found two years after she was taken from her home through an unlocked screen window. Her case sets cold case investigators on the trail of one of the most prolific serial killers in U.S. history.

A 65-year-old woman vanishes, and her children suspect that their abusive father is to blame.

It's not the first time Donna Fowler runs away from home, but it's the last. Three years later and miles away, Stacy Belcher steps out for a bite, and never returns. Two families joined by the nightmare a monster on the loose for over two decades.

In the premiere the murder of two ice cream shop workers in 1967 is investigated.