Raven's Gate is the first book in The Power of Five series, written by Anthony Horowitz. It was published and released in the United Kingdom on 1 August 2005, by Walker Books Ltd and in the United States by Scholastic Press under the adjusted series title The Gatekeepers. It is followed by Evil Star, released in 2006, Nightrise in 2007, and Necropolis in 2008, with the final book Oblivion in 2012.

Anthony John Horowitz is an English novelist and screenwriter specialising in mystery and suspense. His works for children and young adult readers include the Alex Rider series featuring a 14-year-old British boy who spies for MI6, The Power of Five series, and The Diamond Brothers series.