Book Three in the Marauders Series The Marauders are now officially teenagers, and that fact could be determined by their overall disposition. Outside of their regular school work, James Potter, Sirius Black, and Peter Pettigrew are attempting to undergo the extremely different process of becoming an animagi. All of their hard efforts are in an attempt to help their best friend, and fellow Marauder, Remus Lupin. Follow along as the boys attempt to tackle complex magic, relationships, and even more importantly... Quidditch matches.