Includes all 26 books in the series from A to Z:
The Absent Author, The Bald Bandit, The Canary Caper, The Deadly Dungeon, The Empty Envelope, The Falcon's Feathers, The Goose's Gold, The Haunted Hotel, The Invisible Island, The Jaguar's Jewel, The Kidnapped King, The Lucky Lottery, The Missing Mummy, The Ninth Nugget, The Orange Outlaw, The Panda Puzzle, The Quicksand Question, The Runaway Racehorse, The School Skeleton, The Talking T. Rex, The Unwilling Umpire, The Vampire's Vacation, The White Wolf, The X'ed-Out X-Ray, The Yellow Yacht, and The Zombie Zone.