Five Fall Into Adventure is the ninth full-length novel in Enid Blyton's Famous Five series. The Famous Five—Julian, Dick, Anne, George, and Timmy—are on holiday when they discover a mystery involving a kidnapped boy and a deserted house. The title refers to the children "falling into" or unexpectedly becoming involved in a complex plot. They use their collective bravery and keen observation to find clues, pursue the criminals, and rescue the victim.