I recently introduced my mom to one of my favorite shows, BBC's Sherlock (which you can read about here). I believe that she thoroughly enjoyed it and will be happy to watch the next season when it's available. She is also a big fan of the Sherlock Holmes movies with Robert Downey Jr. So, I think you could say that she is a fairly thorough Sherlock Holmes fan... except for the fact that she has never read any of the books. Now, I'm not saying that you can't be a fan without reading the books. My mom is perfect proof that this is not so. My point is that those who HAVE read the books just appreciate the adaptions in a completely different way.
In my boredom, I've decided to rewatch the first episode of Sherlock and make a list of all the references to the books as I could find and put them here just to justify my point. So if you have never seen the show, I would not recommend reading any further as there will be spoilers.
SHERLOCK- EPISODE 1- A STUDY IN PINK: written by Steven Moffat
(Moffat is also the head writer for Doctor Who, so he is a skilled writer when it comes to plot twists and mysteries. He's also an avid Sherlock Holmes fan, so he stuck heavily to the original SH tales.)
- The first reference is obvious. It is based off one of the few novels SACD wrote, A Study in Scarlet.
- John Watson is staying in a rather rubbish hotel room before he moves in with Sherlock Holmes at 221B Baker Street.
- Watson keeps a handgun handy.
- Watson is an army doctor recently belated home from Afghanistan. In the original stories, Watson was an army doctor also recently belated home from the Afghan Wars.
- I'd just like to point out something I read. The writers poke fun at SACD's continuity error in the books by giving Watson a psychosomatic limp when he was actually shot in the shoulder. In the books, it was originally written that he was shot in the shoulder, but then later it said that he was shot in the leg.
- Stamford (the one who introduces Watson and Holmes) and Watson had an internship together at Bart's hospital and meet again after Watson returns from Afghanistan.
- The name on the coffee cups Watson and Stamford are holding says "Criterion". Stamford and John met again in the Criterion Pub.
- In Sherlock's first scene, he is beating a dead man with a riding crop. Stamford mentions that he saw Sherlock Holmes beating a corpse with a stick in the original stories.
- Watson first meets Holmes in a lab in Bart's hospital.
- Holmes immediately deduces that Watson is an army doctor from Afghanistan, but doesn't explain how he knew right away.
- Holmes lists off his short-comings when he realizes that Watson wants to share a flat with him. (Playing the violin when he's thinking, not talking for days when he's upset, etc.)
- In the show, Watson expresses his skepticism over Holmes's claims on his website about how he can deduce a person's profession by looking at the tiniest details. In the books, Watson does the same thing except by reading an article Holmes wrote for a magazine.
- "The game is on!" is a play on one of Holmes's famous quotes, "The game is afoot!"
- Holmes is the only consulting detective in the world because he invented the job.
- Holmes's deduction using Watson's phone is similar to the original deductions in the books, except using a pocket watch.
- The murder to which Holmes is summoned to is located at Brixton, Lauriston Gardens.
- A wedding ring was an important factor at the crime scene.
- "RACHE" was found written at the scene of the crime. In the show, the police thinks it is the german word for revenge while Holmes scoffs at them and says that it's supposed to say "Rachel". In the book, it is vice versa.
- Holmes enjoys Watson's astonishment at his skill
- In the show, Holmes sends Watson two texts "Come at once if convenient" and "If inconvenient, come anyway.". In the originals, Holmes leaves a note for Watson reading, "Come at once if convenient. If inconvenient, come all the same"
- "It's a three patch problem" vs the original quote, "It's a three pipe problem". In the show, Holmes uses nicotine patches rather than smoking it through a pipe like in the books.
- In the show, Holmes uses Watson's phone to send a text just in case his own number is recognized. In the original story, Holmes puts an advertisement in the newspaper, but uses Watson's name in case his own is recognized.
- Lestrade orders a drugs bust on 221B and it is implied that Holmes has had trouble with drugs in his recent past. This is in reference to the original stories where Watson is constantly trying to get Holmes to stop his cocaine habit.
- The victims were killed by a poisonous pill. They were presented with the choice of a good pill and a bad pill.
- A cab driver was the murderer.
- The cab driver is suffering from an aneurism.
- Mycroft Holmes says that he is working on losing weight. This is because Mark Gatiss (the actor who plays Mycroft) is not overweight like Mycroft is described in the books.
- Sherlock says that Mycroft doesn't just a have a position in the British government; he IS the British government. The books don't specify exactly what Mycroft does for the government, but they say he is indispensable.