This Is the Zodiac Speaking (2008) is a Documentary film that follows a documentary featuring interviews with the people involved with the Zodiac killings, covering every aspect of the investigation, including the original investigators and surviving victims. This Is the Zodiac Speaking is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 6.1 out of 10 from 12 votes. Fans of documentary movies may also want to explore similar titles below.