Director James Whale's final completed feature, shot January 6-February 22 1941. His final film was Hello Out There (1949) which was never released.
The last of 7 features that actor Peter Cushing completed in Hollywood at the very beginning of his screen career, returning to England by 1942, where he would meet and marry the love of his life, Violet Helene Beck, in 1943.
James Whale previously directed Frankenstein (1931) and Bride of Frankenstein (1935) while Peter Cushing (Sub-Lieutenant Blackler) later played Professor Van Helsing in The Curse of Frankenstein (1957), The Revenge of Frankenstein (1958), The Evil of Frankenstein (1964), Frankenstein Created Woman (1967), Frankenstein Must Be Destroyed (1969) and Frankenstein and the Monster from Hell (1974).