Twelve-year-old Howard Wallace lives by his list of rules of private investigation. He knows more than anyone how to work with what he's got: a bathrobe for a trench coat, a makeshift office behind the school equipment shed, and not much else--least of all, friends. So when a hot case of blackmail lands on his desk, he's ready to take it on himself...until the new kid, Ivy Mason, convinces him to take her on as a junior partner. As they banter through...

Spring (musical) fever has hit the Grantleyville Middle School Drama Club! Since Ivy Mason is busy with the production, she decides to take a break from sleuthing, while Howard Wallace keeps things running smoothly with their detective agency. Then, just a few weeks before showtime, suspicious things start happening backstage: missing costumes, damaged props, and too many other mishaps to be coincidental. Ivy calls in Howard and their crew to take...