The House of Fear

Despite the orange pips, the film is nothing like Sir Arthur Conan Doyle's original Sherlock Holmes short story "The Five Orange Pips". That is at least partially because the main mystery in the original story is the odd writing of "KKK" in a letter that contained the orange pips, which of course stands for the notorious American white supremacist/terrorist organization, the Ku Klux Klan. By 1945, the worldwide notoriety of that group made a faithful adaptation of the original story pointless for the typical audience and any adaptation of any kind required an extensive rewrite to use it.

As the murders took place in Scotland, a local policeman would have been sent to the crime scene, not Inspector Lestrade from London. The local constabulary contacted Scotland Yard/Inspector Lestrade at the behest of Sherlock Holmes. It is unlikely a policeman would have been sent from London to the north of Scotland during wartime, even at the request of Sherlock Holmes.

Edited into Who Dunit Theater: Sherlock Holmes and the House of Fear (2021)