Castle Sinister
- Cast: Mara Russell-Tavernan, Robert Essex, Karl Meir, James Liggat, John Gauntley
- Duration: 49 minutes
- Genre: Horror, Thriller
- Rating: 2.889/10
- Release Date: 1948-02-19
During the War, a British agent travels to the remote Glennye Castle in the wilds of Scotland to investigate a mysterious murder by a masked phantom. Who or what is the phantom? And how are the Germans involved?
