In Hammer’s most straightforward take on the classic Robert Louis Stevenson tale, Wolf Mankowitz’s screenplay nonetheless springs several surprises: while playing both Jekyll and Hyde as per tradition, Paul Massie as Hyde is dashing rather than hideous. Terror still ensues when Hyde roams 19th-century London alongside Christopher Lee—with whom Jekyll’s wife Dawn Addams is cheating. Monty Norman, composer of the James Bond theme, co-scores the movie.