Anthony John Horowitz, CBE (born 5 April 1955) is an English novelist and screenwriter specializing in mystery and suspense.
His works for children and young adult readers include The Diamond Brothers series, the Alex Rider series, and The Power of Five series (known in the U.S. as The Gatekeepers). His work for adults includes the play Mindgame (2001); two Sherlock Holmes novels, The House of Silk (2011) and Moriarty (2014); two novels featuring his own detective Atticus Pünd, Magpie Murders (2016) and Moonflower Murders (2020); and four novels featuring a fictionalized version of himself as a companion and chronicler to private investigator Daniel Hawthorne, The Word Is Murder (2017), The Sentence Is Death (2018), A Line to Kill (2021), and The Twist of a Knife (2022). The Estate of James Bond creator Ian Fleming also chose Horowitz to write Bond novels utilizing unpublished material by Fleming, starting with Trigger Mortis in 2015, followed by Forever and a Day in 2018, and a third and final novel With a Mind to Kill in May 2022.
He has also written for television, contributing scripts to ITV’s Agatha Christie’s Poirot and Midsomer Murders. He was the creator and writer of the ITV series Foyle’s War, Collision and Injustice and the BBC series New Blood.