Graham Masterton is best known as a writer of horror and thrillers, but his career as an author spans many genres, including historical epics and sex-advice books. His first horror novel, The Manitou, became a bestseller and was made into a film starring Tony Curtis. In 2019, Graham was given a Lifetime Achievement Award by the Horror Writers Association. He is also the author of the Katie Maguire series of crime thrillers, which have sold more than 1.5 million copies worldwide.