Question: What is the name of the movie  directed by Vernon Sewell in 1971 that is based on 16 murders commited over a period of 10 months in1828 in Edinburgh, Scotland?
Sentence (from "Burke &amp; Hare (1971 film)"): It is based on the Burke and Hare murders, and was the last film to be directed by Vernon Sewell.
Relevant evidence: No