Teenager Marlene Vaughan's mother Gertrude was murdered in 1953. They lived in Baldwin Park, in the central San Gabriel Valley of Los Angeles County. Gertrude was abducted from a bar in El Monte and found dead in Azusa. The case was never solved.
Four years later, Marlene obtains a lead on the killers, learning that they have returned to Los Angeles. She reconnects with her old friend Robby, and asks him to help her solve the crime because "he's...