The Not So Secret Case Files of Billy Vale, P.I. — Natasha Deen

Billy Vale is the best detective in the school. Of course, he's the only detective in the school, but that's beside the point. Whether he's dealing with a tricky client, dodging the school bully, or out-smarting Mrs. Smith -- the meanest teacher, around -- if there's a case that needs solving, then Billy's the kid to call!