The Case of the Dirty Clue (Third-Grade Detectives, Bk.7)

Misty is furious when someone in a white car runs over her brand-new bike. Of course her kid brother shouldn't have left the bike in the middle of the road, but the driver was going way too fast! But how can she find the driver when the only evidence she has is her smashed-up dirty bike? Sounds like a case for the Third-Grade Detectives!