An amazing mystery series by best-selling author Enid Blyton, perfect for fans of The Secret Seven. Mr. Goon has received strange messages and is convinced it's one of Fatty's tricks. But the Find-Outers know a mystery when they see one! Where is "The Ivies" and who is "Mr. Smith"? Fatty, Larry, Daisy, Pip, and Bets are sure to find out! This edition contains the original text and is without illustrations.