Fenjves has ghostwritten more than a dozen books, including two number one New York Times Best-Sellers (Witness and Blood Brother). Fenjves also ghostwrote the autobiography of Bernie Mac, Maybe You Never Cry Again, the memoirs of Janice Dickinson, No Lifeguard On Duty and music producer David Foster's Hitman. He also ghostwrote If I Did It, an account of the O. J. Simpson murder case, collaborating with O. J. Simpson himself. The book was pulled by the publisher just weeks before it was set to be released, but it was subsequently revived by Fred Goldman, father of murder victim Ron Goldman, and spent five weeks on the The New York Times Best Seller list. Ironically, years before sitting down to work on that book, Fenjves testified against Simpson in the criminal trial, establishing a time-line through the dog’s “plaintive wail.”
His current film projects include an original action script, Undertow,, which is being produced by Michael De Luca, and an original comedy, Mother, to which Halle Berry is attached.