The Sign of the Four

I think it's funny how in A Study in Pink, when Lestrade set the "drugs bust" Sherlock says he's clean, but in the stories, he's a cocaine addict. In the T.V. show, Sherlock is just addicted to cigarettes, so he uses nicotine patches. In The Sign of the Four, Sherlock and John talk about john's brochure, it's like what they discuss about John's blog in the episode The Great Game. In The Sign of the Four, Sherlock deducts from John's watch as opposed to his phone in A Study in Pink. I realize that BBC Sherlock is set in modern day, but it would still be easy for Sherlock to deduct from a watch, if John had one. Also, in the T.V. show, he deducts the same things from John's phone that he dies from John's watch in the books. Also, in The Sign of the Four, the murder and his ally come thru the window and it's speculated that the ally scaled the wall. This is like what happened in the episode The Blind Banker. Another difference is that in The Sign of the Four the treasure stealers are from India, whereas in The Blind Banker, they are Chinese. In The Sign of the Four, they leave a note saying, "The Sign of The Four". In The Blind Banker, they leave a Chinese sign.