James Mason was originally cast as Rokeby, but he took over the villain's part of the Marquis of Rohan, replacing Eric Portman. Stewart Granger inherited the role of Rokeby.
According to James Mason about his villain's role: "A bad part is one that remains stolidly the same, with the same sort of basic motivations, which are, in this case, rather dull."
According to star James Mason, "The great theater critic James Agate, who was then writing on films, sensibly headed his review 'Bosh and Tosh.'"