Mandy Harker and Preston McNair know books pretty good and they've come to the literary world for two reasons: debuting novels, and kicking ass... and they've already debuted a novel. Mandy's a sensitive Pisces with a white-belt in karate and a wardrobe full of rabbit pelts and turquoise jewelry. Preston collects ninja stars, and has over two-hundred Pokémon cards, including a Mega Charizard XY. Together, they make the most epic co-authorship the world has ever known.