The trailer for the 3rd and final episode of the 3rd season of ‘Sherlock’, called “His Last Vow”, is now online. The second episode “The Sign of Three” aired last night in the UK.
The title and perhaps the theme are a play on the original Sir Arthur Conan Doyle story ‘His Last Bow’.
“His Last Bow”, published in September 1917, is one of 56 short stories about Sherlock Holmes written by Sir Arthur Conan Doyle. It was first published in Strand Magazine, and, amongst six other stories, was collected in an anthology titled His Last Bow, also called Reminiscensces of Mr. Sherlock Holmes. The narration is third-person, not, as usual, by Dr. Watson, and it is a spy story, rather than a murder mystery. Due to its portrayal of British and German spies, its publication during the First World War and its patriotic themes, the story has been interpreted as a propaganda tool intended to boost morale for British readers.