"The Hound of the Baskervilles", arguably the most famous of all of Sherlock Holmes' cases, was filmed in 1939 - not for the first time, of course (there had already been at least five tries, most notably in 1932 with Robert Rendel), but probably in the most impressive way possible. And it was the first time that Basil Rathbone portrayed the world-famous sleuth from Baker Street - the beginning of a very successful, and very high-class film serial produced by 20th Century-Fox that would comprise all in all 15 movies over the next eight years.
And Rathbone certainly was an ideal choice for the role, both physically and regarding his (on-screen) image: very British, and slightly haughty, but still with a sense of humor - only most of the time at the expense of his friend and assistant, amiable Dr. Watson, who was wonderfully played by Nigel Bruce. In fact, many Sherlock Holmes fans regard Rathbone as THE personification of Holmes (only we mustn't forget Arthur Wontner, who had also played Holmes in five movies, and was at LEAST as close to Conan Doyle's original character, if not even a little bit more...).
Actually, the whole cast is superb: idyllically handsome young Richard Greene as Sir Henry Baskerville, the heir of the huge estate of the Baskervilles, whose father has died under mysterious circumstances in the moor recently, Lionel Atwill as the strange Dr. Mortimer, Wendy Barrie as beautiful Beryl, Morton Lowry as her young step-brother... And no less superb is the direction: foggy Dartmoor probably had never been photographed in such a uniquely creepy way before, providing a perfect background for the murderous ongoings that revolve around the old legend of a horrible hound that scares or bites people to death... But Sherlock Holmes, of course, has got another, much more reasonable theory!
The whole film is immensely suspenseful (with England around 1900 being marvelously recreated in every detail), but especially the dramatic climax in the end is REALLY made for strong nerves - a real, thrilling, classic MUST for every fan of the crime genre!