The Assassin's Creed series, by Oliver Bowden, is a collection of historical fantasy novels set during the 15th century, following an Assassin named Ezio Auditore as well as other Assassins in the war with the Knights Templar. The books in this series are tie-ins to the Assassin's Creed video game. Oliver Bowden is the pen-name of Anton Gill, the novelist and Renaissance historian who has written several novelizations of the Assassin's Creed video games.