Prepare to unravel 'The Mystery of the Missing Man' by Enid Blyton, part of the Five Find-Outers series. Fatty, the ingenious leader of the group, receives a crucial message from Chief Inspector Jenks about an elusive fugitive, notorious for his disguises and curious fascination with insects. However, Fatty's attention is divided when he becomes entangled with Eunice, the daughter of his father's friend. As their bond deepens, Eunice becomes an unexpected ally in solving the mystery.