In the thrilling installment of the Five Find-Outers series, 'The Mystery of the Missing Necklace', author Enid Blyton takes readers on a suspenseful journey through the streets of Peterswood. When the town is consumed by Mr. Goon's frantic activities, the young sleuths are determined to uncover the truth behind his mysterious behavior. Seeking assistance from their trusted ally, Inspector Jenks, the Find-Outers discover that Peterswood has become a target for a cunning gang of jewel thieves. With their ingenuity and resourcefulness, the children embark on a mission to aid the police by vigilantly observing for any suspicious activity.