Pace is sometimes a little clumsy, there is a lot of unconvincing overacting, and the very beginning seems too much theatre. However, the film improves when the famous detective finally appears. Basil Rathbone is a perfect Sherlock Holmes. His first dialogue with Watson is exactly what you expect for the characters. I think Musgrave Manor as a whole could have been better explored and shown; the script and edition fragmented too much its portrayal. Anyway, there are some charming atmospheric thriller elements, such as the crow, the ritual and the storm, besides a few funny gags. The ending is also pretty nice.