Coley McCraney, 45, faces murder and rape charges for the shooting deaths of Tracie Hawlett and J.B. Beasley.
Makers of "13: The Search for Leigh Occhi" delve into the 1992 cold case.
"I can't help feeling that somewhere, in her final pages, she left enough clues ... to put California's worst serial killer behind bars," widower Patton Oswalt said.
The hijacker took $200,000 in cash, jumped out of a passenger jet and vanished.
The body of Natalie Perez, 21, was found in an abandoned Cleveland home over the weekend.
An autopsy confirmed that the body was Margaret Martin. She had been dead for at least 24 hours before the hunters found
She was murdered, but, for now, only police and her killer know how. After nearly two years, her identity remains a mystery.