Melanie Conklin

"Ever since her father died in a terrible accident, Maddy Gaines has worried a lot. She calls the police so often that she's on a first-name basis with the Sheriff. When a new boy moves to town, Maddy is convinced that he's not who he says he is--he's a boy who went missing six months ago. Maddy, her dog, her best friend, and her stepdad team up to see what he's hiding"--