Listed in Journet's inn-register is Tom McKnight of New York. He was an adviser on Universal's Holmes series, and was married to Edith Meiser, a writer familiar to devotees of the radio productions "The Adventures of Sherlock Holmes" and "The New Adventures of Sherlock Holmes".
When Holmes & Watson arrive at the fortified house of Judge Brissom, they are met by a fierce dog. Trying to calm the wild animal, Watson rather lamely says "Nice Fido", then "Nice Monty" and "Nice Winnie". Monty and Winnie were the names of Watson's dogs in the radio series of Sherlock Holmes, which were being produced at the same time. Monty and Winnie were named after General Montgomery and Winston Churchill, considered appropriate during wartime.
The eighth of 14 films based on Arthur Conan Doyle's fictional consulting detective Sherlock Holmes starring Basil Rathbone as Sherlock Holmes and Nigel Bruce as Dr. Watson.
Penrose Manor is near the village of La Mort Rouge, whose name means "The Red Death" in French, the language of Quebec. The village is, however, fictional.
When Journet looks at the hotel registry at around 0:18:20, the ledger shows that Holmes has signed himself and Watson in on February 10.