Publisher Annotation: Halloween is the Bad Seed's favorite holiday of the year. But what's a seed to do when he can't find a show-stopping costume for the big night? Postpone trick-or-treating for everyone, of course! Can he get a costume together in time? Or will this seed return to his baaaaaaaaad ways? Find out in this hilarious, charming, and thought-provoking continuation of Jory John and Pete Oswald's bestselling series. .