Frank Tallis is a writer and clinical psychologist. Between 1999 and 2012, he received or was nominated for numerous awards, including the New London Writers' Award, the Ellis Peters Historical Dagger, the Elle Prix de Letrice, the Crime Writers' Association Historical Dagger Award, and two Edgar Allan Poe Awards. Under the name F. R. Tallis, he is the author of The Sleep Room, The Forbidden, The Voices, and The Passenger, all available from Pegasus Crime. He lives in London.