The Scarlet Claw

Super sleuth Sherlock Holmes (Basil Rathbone) and his bumbling assistant Dr. Watson (Nigel Bruce) are brought to the tiny village of La Morte Rouge, Canada, to investigate a series of ghastly slayings. The villagers believe the murders signal the reappearance of a legendary ghost whose glowing form can be seen floating through the fog-shrouded marshes. But Holmes suspects the culprit is really a villager in disguise, so he sets an ingenious trap to learn the true identity of the ghostly killer.