The Golden State Killer. The Unabomber. Ted Bundy. You’re probably familiar with these serial killers. But in the mid-1970s, another monster terrorized San Francisco’s gay community. He was coined “The Doodler,” and he may have been responsible for as many victims as the Zodiac Killer, yet you’ve probably never heard of him.  Plagued by a complicated investigation, a frightened public, and the hesitation of many to come forward, the case went cold, and a killer walked free. Nearly 50 years later, a renewed hunt for a forgotten serial killer seeks to change that.