Trivia, Quotes, Notes and Allusions
Holmes: What one man can invent, another can discover.
This episode is based on Sir Arthur Conan Doyle's story The Adventure of the Dancing Men which first appeared in The Strand magazine in December, 1903.
Click here to read the original story.
In a change from the usual format, this episode's end titles play as the camera pans away from the Cubitt house, as the characters depart.