Michael Castleman grew up in Lynbrook, a Long Island suburb of New York City. He graduated Phi Beta Kappa from the University of Michigan with a degree in English (1972), and earned a Masters in journalism from UC Berkeley (1977). He has lived in San Francisco since 1975. An award-winning medical journalist, he is the author of twelve consumer health and sexuality books and currently publishes GreatSexAfter40.com. He has published three previous Ed Rosenberg novels: The Lost Gold of San Francisco, Death Caps, and A Killing in Real Estate.