Canon References/Easter Eggs in Sherlock: “The Six Thatchers”

The BBC show Sherlock has such fun with easter eggs and direct (or muddled) quotes from the original Sherlock Holmes stories, as well as other TV adaptations and films. Here are the latest from Series Four, episode one, “The Six Thatchers”:

• Sherlock is certain Moriarty has a posthumous plan to torment him. In the short story “The Adventure of the Empty House,” this is many confederates who come hunting him. This certainly may be the case this time. Of course, the running gag this episode is that it isn’t Moriarty no matter how much Sherlock anticipates him.
• “I’m going to monitor the underworld, every quiver of the web will tell me when the spider makes his move,” Sherlock decides. He adds later, “The world is woven from billions of lives, every strand crossing every other. What we call premonition is just movement of the web. If you could attenuate to every strand of quivering data, the future would be entirely calculable.” In “The Final Problem,” he describes Moriarty with the words “He sits motionless, like a spider in the center of its web, but that web has a thousand radiations, and he knows well every quiver of each of them.” He also spends the story predicting his on death at Moriarty’s hands.
• “He drowned, Mr. Holmes. That’s what we thought. But when they opened up his lungs…sand.”…