Someone has been writing Binky Rules all over school property. The principal gets Arthur's friend Binky to clean up the mess. But Binky denies he's the one the who did it. Super sleuths Buster and Fern try to solve the mystery. The only problem is they can't seem to agree on anything. Will they be able to discover who's been writing the graffiti before Binky really gets into to trouble?---from the publisher
64 pages 978-0316121934 Ages 5-9
Keywords: mystery, school story, friends, helping others, detectives, 5 year old, 6 year old, 7 year old, 8 year old, part of a series, chapter book
