A series of gruesome murders has Scotland Yard baffled. Is it the work of a homicidal maniac, or something even more sinister? It's time for the brilliant Sherlock Holmes and the inimitable Dr. Watson to set things right - though poor Watson is put upon quite a bit in the process. Hillary Brooke is featured as second-in-command villainess to the infamous Professor Moriarty, played by Henry Daniell. Highly entertaining as all the others, this is one of the darker episodes in the outstanding Universal series. While nothing graphic happens onscreen, the nature of the described crimes makes it unsuitable for young children.

There's a duplicate of this movie here: http://www.archive.org/details/TWIG1945