I like all of the Basil Rathbone Sherlock Holmes films, but this is one of my favorites. Imagine you are in The Quiet Man's village of Inisfree full of quirky colorful characters and suddenly the fog rolls in and a glowing monster wandering around the marshes first starts ripping out the throats of sheep, then graduates to people.
The same thing happens here, except it is in a village in wartime Canada. Luck will have it that Holmes and Watson are in Canada at a convention on the occult when the first human victim is killed, the wife of one of the attendees of the conference. She was once a famous actress. This is quite a mystery, since two of the people Holmes comes to suspect end up victims of "the monster" themselves, and yet none of the three victims has anything in common, none know each other now nor ever did. Well, they actually did have one thing in common - each had an odd premonition that they were about to be killed before it happened. The first victim actually sent a message to Holmes at the convention in Canada asking for his help, unfortunately, not in time though.
You know you are in present day because of the technology being used, but the characterization of Holmes, Watson, and the villagers makes the film timeless. How odd that Universal could hit it out of the park in the 40s with the Sherlock Holmes series in the realm of suspense and even horror, but really never managed to hit the mark post Laemmle with any of the actual Universal horror franchises.
This is a wartime film that rarely enough has nothing to do with WWII, yet at the end Holmes manages to find a way to quote Churchill.
I'd highly recommend this one.