- Script
- Carl Barks
- Pencils
- Carl Barks
- Inks
- Carl Barks
- Colors
- ?
- Letters
- Carl Barks
- Genre
- anthropomorphic-funny animals
- Characters
- Donald Duck; Huey; Dewey; Louie; Uncle Scrooge (second appearance); Diamond Dick
- Synopsis
- Uncle Scrooge and the ducks go to Scotland to find the treasure hidden in the walls of the old McDuck castle, and there they encounter a "ghost" that is invisible except for the shadow cast by its skeleton. The "ghost" soon steals the treasure and traps the ducks on a balcony a hundred feet above the ground, but the nephews get down safely and find a secret entrance to the castle through an old graveyard.
- Reprints
Part 11 of 14. USA Title: The Old Castle's Secret. Art submitted on December 3, 1947. Synopsis by Michael Barrier from "Carl Barks and the Art of the Comic Book" (1982).