Aurors: The Fist of Mars

Aurors: The Fist of Mars is a work of Harry Potter fan fiction that begins just months after the Battle of Hogwarts with the recruitment of Harry Potter into the ranks of the aurors. Harry and Ron begin their training while Ginny and Hermione return to school, but Kingsley Shacklebolt introduces them to a young auror who was under cover during the war. Dunstan's experience leads Shacklebolt to believe that a higher-up in the Department of Magical Law Enforcement was a traitor.

In addition to their investigation of their superior, Harry and Ron end up entangled in cases involving werewolves, masked vigilantes, and a militant organization that calls themselves The Fist of Mars.