When you consider this was directed by Roy William Neill, who helmed Universal films 'Frankenstein Meets the Wolfman', it's perhaps not too surprising 'The Scarlet Claw' is rich in horror detail. All the Universal flourishes are there - and a lot of the cast will be familiar too. This for me remains one of the best Sherlock Holmes films, although some cheats are provided to make sure we don't guess who the killer is.
We have it all - American cockneys, mist-layered streets, a local tavern full of weathered faces and scowls, and Watson (Nigel Bruse) unable to keep his mouth shut. He is a buffoon, and it makes you wonder why a man of Sherlock Holmes's brilliance tolerates him, but for this viewer at least, he's a great character; we get to witness the master detective's eccentricities through him, his distance and aloofness. If Watson was not around, we'd be hard-pressed to find a character to relate to in these stories. A pain in the neck he may sometimes be, but a necessary one. And there's a genuine warmth between them - off-screen as well; the only argument they ever had was when Basil Rathbone (still the definitive sleuth) decided to give up the role.
I'm still not sure the revelation of the villain isn't a slight disappointment, mainly due to the lack of subtlety by the actor in question, but other than that this is top-notch stuff. Best enjoyed on an autumn evening with a cup of something warm. My score is 8 out of 10.