Born in New York City in 1949, Jonathan Kellerman grew up in Los Angeles, receiving a BA in psychology from UCLA and a PhD in psychology from the University of Southern California. He worked his way through school as an editorial cartoonist, a columnist, an editor, and a musician. Kellerman went on to become a clinical professor of pediatrics at the Keck School of Medicine. His first two books were about medicine: Psychological Aspects of Childhood Cancer (1980) and Helping the Fearful Child (1981).
Kellerman's first mystery, When the Bough Breaks (1985), introduced Alex Delaware and won the Edgar Allan Poe Award from the Mystery Writers of America. It also won the Anthony Award at the World Mystery Convention (Bouchercon) and became a New York Times bestseller and a television movie.
In addition to the bestselling Delaware series, Kellerman has written four novels about a beautiful Los Angeles homicide detective with a complicated past, Petra Connor: Survival of the Fittest (1997), Billy Straight (1998), Twisted (2004), and Obsession (2007); two stand-alone bestsellers with his wife and bestselling author, Faye Kellerman: The Butcher's Theater (1988), The Conspiracy Club (2003), and Capital Crimes (2007); and two children's books: Daddy, Daddy, Can You Touch the Sky? (1994) and Jonathan Kellerman's ABC of Weird Creatures (1995).
Kellerman has four children, one of whom is also a professional writer of crime fiction. They live in Southern California.
