For the ominous march music that accompanies "Evil Jerry" stalking Tom, composer Scott Bradley parodied the theme from the popular 1940s radio series "Superman".
The title makes reference to the novel 'The Strange Case of Dr Jekyll and Mr Hyde' by Robert Louis Stevenson.
This is the last Tom and Jerry cartoon animated by Pete Burness before he joined Warner Bros. in 1947.
As with most Tom and Jerry shorts of this era, Tom looks more like an actual cat. He also has the patch of lighter fur between his eyes.
The home in which the characters reside sports the very latest in postwar furnishings, including a wall safe. Adult audiences would have appreciated this fine attention to detail, which was a feature of most cartoons produced during animation's golden age.