This third Sherlock Holmes film from Granada is not as good as "The Sign of Four" or "The Hound of the Baskervilles". However, it is a very enjoyable and well-made production nevertheless. It is an overextended version of what was originally only a short story but making it into a feature-length film only improves it rather ruining it. This Peter Hammond directed- Jeremy Paul scripted adaptation is one of the darkest entries in the Granada series.
It's plot is compelling and dramatic. It does not have much mystery, as we know who the perpetrator clearly is but the drama comes from Holmes's effort to bring down Charles Augustus Milverton from his ruthless blackmailing. Like so many Holmes stories, it exposes the hypocrisy of Victorian society where these so-called "Noblemen" carry their own flaws and dirty secrets. This film is dark and mournful but it has a good share of humor and humanity as well. The most amusing scenes are between Holmes (in disguise) and Agatha (Milverton's housemaid) suggesting a possible romance. I think she loved Holmes but I don't think Holmes cared for her. As Holmes himself is rather asexual, the only true love for him is his work.
The acting by its cast is solid. Jeremy Brett and Edward Hardwicke continue to be perfect as the classic duo of Holmes and Watson. Serena Gordon and Sophie Thompson are good as well. However, it is Robert Hardy performance as Charles Augustus Milverton that steals the show. C.A.M. manages to be a villain far more chilling and despicable than Professor Moriarty. Holmes always had admiration for his former arch-nemesis yet with Milverton he brings out nothing but pure disdain.
Riveting from start to finish with superb cinematography, costumes, music, and attention to periodic detail. If "The Master Blackmailer" isn't one of the best Sherlock Holmes films ever made, it is certainly among the better ones.
