This is the Zodiac Speaking S1, E3

A shocking new series that points to Arthur Leigh Allen as the Zodiac killer, at the heart of the revelations is an unlikely family whose increasingly chilling relationship with Allen promises to connect him to the infamous Zodiac murders.

Cast:David Seawater , Connie Seawater , Don Seawater , Robert Graysmith , Don DiStefano , J.C. Smith , Marlene Dodge , Hily Greene , Rita Williams , Darin Alvord , Melody Barger , Shirley Leonard , Pat Chiono , Kris Chambers , Tammie Lee Prueter , Terry Poyser , Tom Voigt , David Prueter