Now out on BD from Indicator. It's the best I've seen the film looking although it's never what you might call beautiful. It's Amicus' most Hammer-like film, specifically one of the tamer '50s Hammers like The Man Who Could Cheat Death, rather than something that you'd expect in the blood and nudity era of the early '70s. Subotsky's decision to rename Jekyll and Hyde as Marlowe and Blake remains bewildering* particularly, as the UK trailer (included on the BD) specifically references Jekyll and Hyde. You can sometimes see how the aborted Pulfrich Effect 3D might have worked as there's lots of depth in some of the compositions but the ever-roving camera makes it feel like we're somehow disconnected from the action and it stops us from properly identifying with the characters. It also seems to have resulted in some very inellegabt transitions between scenes, including one that ends with a character delivering their dialogue while obscured by a pillar. Cushing is always a pleasure to watch although he has little to do here, Mike Raven is strictly amateur hour, but Lee is excellent, particularly in his early Hyde phase when he conveys change from scientist into the cruel-and-delighted-by-his-own-cruelty, nasty little boy that is Hyde without any make-up. The BD is loaded with extras, including a lengthy audio interview with Subotsky and a feature on the excellent score by Carl Davis.
*ETA: In the interview Subotsky reveals that he changed the names because he thought he wouldn't get funding for a Jekyll and Hyde film, there having been so many of them. Fair point.