A crazy crime-busting adventure for 8-12 year-olds. Sam worries about things. A'ˆlot. But when a family crisis looms, and the clock starts ticking, Sam and his friends must go on a madcap undercover mission to recover a stolen painting from a notorious con-man. Previously published as Dirty Rotten Tricks. "A hilarious tale... that will appeal to anyone who likes books with plenty of knockabout humour" - Books For Keeps