This is a classic children's crime story from Enid Blyton's Mysteries series. When the local PC starts receiving strange anonymous notes he calls in the Five Find-Outers to discover their author. But the subsequent discovery leads to greater things as the gang stumble across a diamond robbery. Enid Blyton's crime-fighting child investigators have been firm favourites amongst readers of all ages for decades. Fans of The Famous Five & The Secret Seven should not miss The Mystery of the Strange Messages.