"A Scandal in Belgravia" is the first episode
of the second series and the fourth episode overall. It is also is the second series' premiere.
It is loosely based on the short story "A
Scandal in Bohemia" with several elements from the Sherlock Holmes novel
The episode opens where "THe Great Game" took off. After something comes up to him from an unknown woman, Moriarty lets John and Sherlock live and decides for them to "die another day".
- Irene is revealed to be alive to John in “The Lying Detective” when he hears her message go off to Sherlock.
- John’s middle name is revealed to by Hamish. Later in "The Sign of Three", John refuses to tell Sherlock his middle name, no matter how many times Sherlock guesses.
- The story itself is based on Arthur Conan Doyle’s story
- John Watson writes on his blog the "Geek Interpreter", referring to the Short Story, “The Greek Interpreter
- John also adds the “Speckled Blonde, referring to the short story “The Speckled Band”
- Also several minor are added such as the Illustrious Client and "* The Priory School".
- Moriarty's text message to Mycroft of "Dear me, Mr. Holmes. Dear me." is his note to Holmes in the epilogue of "The Valley of Fear".
- One of John’s blog is called "Sherlock Holmes Baffled", the same film referring to the first silent film.
- John reveals his middle name to be "Hamish”, which is also a nod to a woman named Dorothy Sayer’s theory on John’s name being the original Doctor Watson’s last name.
- As Sherlock goes to open Irene’s safe in her house, he said "Vatican cameos", referencing the mystery behind The Hounds of the Baskervilles