Claire DeNardo is scared of a lot of things. Ordinary objects like roller coasters and men's hairpieces make her knees knock loud enough to be a band's rhythm section. Unfortunately, the only job Claire can find is working for her Uncle Gino in his seedy detective agency. Until now, her cases have all be middle-aged men with trophy wives who needed watching. But when Gino retires and leaves her in charge, Claire gets swept up in a murder case despite her fears. Both the client who hired her and the handsome police detective want her off the case. When the wrong person is charged, it's up to the terrified detective to summon all the courage she can to find the true killer.