Judy Moody is in a mood. A sleuthing, Nancy Drew kind of mood. So what's a WBMS (world's best mystery solver) to do? Go find a mystery, that's what! And she doesn't have to snoop for long: when Mr. Chips, a beloved crime-dog-in-training, goes missing, Judy Drewdy and her chums, agents Dills Pickle (Frank), Spuds Houdini (Rocky), and James Madagascar (Stink) find themselves smack-dab in the middle of a real life, scare-your-pants-off whodunit. Was Mr. Chips stolen by dirty dognappers? And why are chocolate-chip cookies disappearing all over town? Watch out for red herrings along with clever references to classic Nancy Drew mysteries as Eagle Eye Moody and company are hot on the case!