Question: Mr. Wong, Detective is a 1938 American crime film directed by William Nigh and starring who, was an English actor who was primarily known for his typecast roles in horror films that depicted the characters Frankenstein and the Mummy?
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: Yes