The Old Castle's Secret is a comic story written and drawn by Carl Barks. It features Donald Duck, Scrooge McDuck, Huey, Dewey and Louie Duck and Diamond Dick. Sir Quackly McDuck is mentioned several times and impersonated by Diamond Dick (as is Scottie McTerrier).
Scrooge McDuck has a new project. He has known since he was a child that somewhere in Castle McDuck, the lost treasure of Sir Quackly McDuck is hidden. All past searches by members of the clan have been unsuccessful, but Scrooge thinks that with modern technology such as X-rays to scan the walls, it will be a child's play to find the loot. However, when they arrive, they are opposed by what seems to be the ghost of Sir Quackly himself, who seems very intent on keeping the treasure to himself…
Behind the scenesEdit
This story was first published in Dell One Shots #2, titled Donald Duck even though it is not officially part of the Donald Duck line. It was reprinted in The best of Donald Duck and Uncle Scrooge #1 in 1964, then also in Best Comic Series #4 and in Best Comics #180 (as Uncle Scrooge and the Secret of the Old Castle). It was then reprinted in the various versions of the Carl Barks Library.