Yosemite: a hand is found, a serial killer confesses. But he’s lied about committing hundreds of murders. Is this one real – or a false confession?

Don and Kim zero in on serial killer Henry Lee Lucas. They find evidence in Summit Meadow that seems to match his story -- but is Lucas lying?

Hikers find a skull. Years later, Kim Tucker’s son Cullen takes on the case. After 40 years, Jane Doe is identified with new DNA technology.

We meet Jane Doe’s friends, learn about her family, life in a cult and other men who may have killed her. Investigators name their likely perpetrator.