The Kingdom of Wrenly #14: A Ghost in the Castle
The Lunch Club #8: The Puzzle of Doom
The Notebook of Doom #10: Snap of the Super-Goop: A Branches Book
The Notebook of Doom #7: Flurry of the Snombies: A Branches Book
The Notebook of Doom #9: Rumble of the Coaster Ghost: A Branches Book
The Secret Explorers #11: and the Haunted Castle
Thea Stilton #3: Thea Stilton and the Ghost of the Shipwreck
