A new trailer for FX’s first true crime docuseries, The Most Dangerous Animal of All, investigates the mystery of the Zodiac Killer.
The clip teases that it will follow a man named Gary L. Stewart, who is convinced that his father is the unidentified serial killer who terrorized California throughout the late 1960’s and early 1970’s. As the trailer progresses, it highlights more and more photographs, peculiar coincidences, and various forms of evidence Stewart uses to build his case.
“I often get asked, ‘When you first suspected your father was the Zodiac Killer, why didn’t you just stop?'” Stewart says in the clip. “Because it was my identity, and it was my story. I just had to know … But it wasn’t until I started doing my own research that I actually found out the whole truth.”
Watch the trailer for The Most Dangerous Animal of All below.
All four episodes of the series will air on March 6th on FX.