In August 1972, the body of Jody Loomis is found in the woods. 34 years later, the killer's DNA is recovered from Jody's old clothing but it isn't matched until 2018, when genetic genealogy helps point to one suspect--whose guilt must be proven in court.

13 days after Pam Pitts disappears in 1988 her charred body is found at a popular hangout spot in the Arizona desert. When a second victim is discovered in a mineshaft, detectives suspect the killer may have known them both, but the truth is decades away.