My Rotten Life (Nathan Abercrombie, Accidental Zombie 1)

When fifth-grader Nathan Abercrombie accidentally gets doused with an experimental serum, he becomes a half-dead zombie - and discovers that being half-dead isn't all bad. He doesn't feel any pain, so there's no need to worry about Rodney the bully anymore. Still, Nathan would rather be human. Will he find a cure?