Ex-policeman. Ex-soldier. International tennis player. And full-time crime writer. Welcome to the world of Yorkshire author, Colin Campbell. A member of The Crime Writers' Association, The Society of Authors and now the Mystery Writers of America, Campbell is as prolific as he is diverse, having written horror novels, supernatural thrillers, and children's books, as well as his mainstay, crime fiction created from the gritty first hand knowledge of 30 years on the beat.