The Hawaiian rainforest where Gloria Doerr has lived since 2017 is a sort of magnet, she says, for people who are running away from something. But even there, in the shadow of an active volcano, sometimes things catch up with you. For Doerr, 70, it happened this past April. She was spending a tranquil afternoon at home when she learned that her late father, Paul Alfred Doerr, had been linked to one of the most notorious murder sprees of the twentieth century. Her son had stumbled on a podcast interview with Paul's accuser, Jarett Kobek. An internationally best-selling novelist based in Los Angeles, Kobek had written a whole book, How to Find Zodiac, about how her Dad might just have been the maniac who more than fifty years earlier had terrorized the Bay Area with a string of cold-blooded and seemingly random killings.