Castle Sinister (1948 film)

Castle Sinister is a 1948 British mystery film directed by Oscar Burn and starring Mara Russell-Tavernan. It is based on the play Mark of Judas by Vance Youden. It was remade in 1954 with the title The Devil's Jest, again starring Mara Russell-Tavernan.

Plot
During the Second World War, an Army intelligence officer travels to Glenye Castle in Scotland to investigate the death of an officer and the disappearance of another. Both are attributed to the castle's mysterious phantom but actually are the work of an enemy agent.

Cast

 * Mara Russell-Tavernan as Gabrielle, Marchioness of Glenye
 * Alistair Hunter as McTavish
 * James Liggatt as Neale
 * Karl Meir as Selwyn
 * Robert Essex as Nigel
 * Maureen O'Moor as Maggie
 * Myra Celian as Lorna
 * Humphrey Stamford as McWerter
 * John Gauntley as Michael
 * Patricia St. John as Jean
 * Lucien Boré as Fairfax
 * Hugh Arnald as Matthews
 * Harald Melvill as Crofter
 * Peter Emmott as Taxi Driver

Themes
Castle Sinister reflects the immediate post-war British concerns of the threat posed by Nazism (rather than Communism), and the possible existence of secret Nazi organizations in Britain working to rebuild Germany. It is one of few films of the period to  examine the operations of enemy intelligence agents, saboteurs or traitors.