The Last Days of Marilyn Monroe: A True Crime Thriller is a book by James Patterson and Imogen Edwards-Jones that investigates the mysterious circumstances surrounding Marilyn Monroe's death, blending fact and fiction to explore her final days, relationships with figures like Bobby Kennedy, and the enduring questions about whether her death was a suicide or murder. The book covers her career, personal struggles, and the events leading up to her death, presenting a compelling, "ripped-from-the-headlines" account.