The Mystery of the Disappearing Cat is the second book in Enid Blyton's Five Find-Outers and Dog series. The Find-Outers—Fatty, Larry, Daisy, Pip, Bets, and Buster—tackle a new case involving the inexplicable disappearance of a valuable pedigree cat. The investigation leads them through various clues and red herrings, testing their detective skills and their ability to work together to solve a crime that initially seems impossible.