Yay! It finally aired and I was actually able to see it - won't tell how but it wasn't terribly illegal Thanks to all who made that possible!
I take it that comments on references to the original Doyle stories are supposed to go here for the time being and not in the "Canon References" thread? Okay then, I'll be nerdy here to my heart's content:
- Sebastian Moran, the last of Moriarty's people who was going to assassinate Holmes with his special German air gun became Moran the politician who wanted to blow up parliament
- The young woman who is tricked into falling in love with her stepfather, Mr Windibank, is from "A Case of Identity"
- The line about London, the "great cesspool" is from "A Study in Scarlet"
- The text to Mary plays with a glitch of Doyle's: in one of his stories, Mary calls her husband "James" instead of "John"
- There is a "hat deduction" (without Mycroft) in "The Blue Carbuncle"
- In "The Empty Hearse", Holmes disguises as an elderly book collector who offers Watson obscure volumes. Here, the poor man was real and John only thought he was Sherlock in disguise.
I am sure there were a lot more!
The episode seemed kind of disjointed to me. They probably had ten times as many ideas as would fit into 90 minutes. But it's really nice to have everybody back, isn't it?