Thomas and the Castle is a book.
Percy is telling ghost stories again. Thomas does not believe it, but then weird things start to happen. Soon, Thomas finds the explanations for the strange happenings.
- Bill and Ben
- Sir Topham Hatt
- Edward (cameo)
- Henry (cameo)
- Harold (cameo)
- This book is partially based on the first season episode Down the Mine and the second season episode Ghost Train.
- Percy's coal bunker is green.