Question: What was the sequel to Bride of Frankenstein (a sequel itself) and the last in the series to star Boris Karloff as the monster?
Sentence (from "Boris Karloff"): William Henry Pratt (23 November 1887 – 2 February 1969), better known by his stage name Boris Karloff, was an English actor who was primarily known for his typecast roles in horror films that depicted the characters Frankenstein and the Mummy.
Relevant evidence: No