The Black Castle « Movie from 1952

Sir Ronald Burton is invited for a hunt by the cruel Count von Bruno.

While there, Burton searches for evidence that the count murdered his friends and becomes ensnared in a cat-and-mouse game that turns deadly when he falls in love with the count's wife, Elga.

Only the castle physician, Dr. Meissen, may have the power to free the lovers, but his method could put them in even greater jeopardy.