The Absent Author (#1)
The Bald Bandit (#2)
The Canary Caper (#3).
The Deadly Dungeon (#4)
The Empty Envelope (#5)
The Faded Photograph (#6)
The Giggling Ghost (#7)
The Haunted Hotel (#8)
The Icy Intruder (#9)
The Junkyard Dog (#10)
The Kidnapped King (#11)
The Loathsome Leopard (#12)
The Missing Mummy (#13)
The Ned Nickle (#14)
The Oldest Ocean (#15)
The Purple Panda (#16)
The Quicksand Quarry (#17)
The Robot Runaway (#18)
The Scarlet Scarab (#19)
The Talking Table (#20)
The Up-and-Up Elevator (#21)
The Very Vanishing Video (#22)
The Wizard's Warning (#23)
The X-Ray Rex (#24)
The Yellow Yacht (#25),
The Zippy Zipline (#26)