Perri O'Shaughnessy is the pen name for two sisters, Pamela and Mary O'Shaughnessy, who live in Hawaii and on Lake Tahoe, and California and on Lake Tahoe respectively. Pamela graduated from Harvard Law School and was a trial lawyer for sixteen years. Mary is a former editor and writer for multimedia projects. They are the authors of nine previous Nina Reilly novels: Presumption of Death, Unfit to Practice, Writ of Execution, Move to Strike, Acts of Malice, Breach of Promise, Obstruction of Justice, Invasion of Privacy, and Motion to Suppress.