Matthew Hopkins, Witchfinder General (The Conqueror Worm in its U.S. release) is the last film completed by director Michael Reeves before his accidental death at the age of 25. The 1968 horror film stars Vincent Price.
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Moria says "it has been called Price’s greatest performance and probably is." 1000 Misspent Hours says, "What we have here is one of the first of the late 60’s/early 70’s witch-burning movies, and a strong contender for the arguably dubious honor of being the best of the bunch," noting "a clearly thought-out, complex, involving story, making good but sparing use of convincing historical background" and calls it "a superior evening’s entertainment". It gets an 83% rating at Rotten Tomatoes.