16. Dr. Jekyll and Sister Hyde (1971), DVD
From the title, you might think this is a comedy... Far from it. This is actually one of Hammer's more grisly films. And one of their best imo.
The story unfolds in the foggy "backwaters" of London. Jekyll is pursuing cures for various diseases using something he calls "antivirus". But realizes his research is going too slowly, and can't be completed within his lifespan unless he finds some way to extend it. So he decides to look for a cure to aging instead. The method involves female hormones, which aren't easy to come by in 19th Century London, unless you know the right sort of people, or are willing to cut a few corners.
That's the setup. But writer Brian Clemens and director Roy Ward Baker also cleverly weave fictional and historical characters (including Burke and Hare, and the White Chapel Murderer) together into their story, while turning the traditional Jekyll theme on its ear. There is definitely some dark
humor here related to the role reversals. And clever camera tricks, and some nudity. But for the most part, this is played "straight", with fine performances by Ralph Bates, Martine Beswick, and the supporting cast.
The video on the Anchor Bay DVD appears to be cut together from two different prints, one fairly sharp and grainy, and the other softer and more faded. But it's good enough to tell the story. The audio is monophonic, but decent. Dialogue is clear and intelligible. The music score (which is used sparingly after the titles) lacks dynamics and is on the brighter side.