He's covered the Zodiac, the Unabomber and others. Now, Kevin Fagan turns his attention to a forgotten serial killer who preyed on San Francisco's gay community in the '70s for The Chronicle's new true-crime miniseries, The Doodler. He talks to Demian Bulwa about the investigation and plays an excerpt from Episode 1. | Unlimited Chronicle access: sfchronicle.com/pod

Follow The Doodler: sfchronicle.com/doodler

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