Continuity mistake: The underground car seen in the CCTV video is from the Jubilee line, but is meant to be the District Line. It's also different from the one where the heroes defuse the bomb, which is an actual District Line train (D stock). The rounded doors is the most visible proof.
His Last Vow - S3-E4
Continuity mistake: In the scene in the lab where they're testing Sherlock for drugs, Sherlock stands with his arms folded, then down, then folded, then down. Molly goes to reproach him, his arms are folded. The slaps somehow happen with his arms down.
Continuity mistake: As Sherlock and John approach the missing subway car, and especially as they bend to peer beneath it, the interior of the car to a distance of several feet is plainly visible through the window of the door (you can see the curved ceiling inside and some unlit fluorescent light bars). However, an interior shot then shows that there is a closed door inside the car, a foot or so inside the exterior door, that Sherlock has to push open to enter the car proper. This door should have blocked their view of the inside of the car before they entered. It didn't, so it has gone from open to closed between shots without anyone touching it. (01:05:35)
His Last Vow - S3-E4
Continuity mistake: When Sherlock is being rushed to the hospital, when the paramedic rips open his shirt the body has body hair, but all the topless scenes following show that Cumberbatch has a hairless chest.
Continuity mistake: The scene where Sherlock says "Vatican Cameos" he is seen to be facing the right side of the shot. Yet in the shot before that he is facing the left side of the shot from the back.
His Last Vow - S3-E4
Continuity mistake: When the surgeons revive Sherlock, the tube/string holding his breathing tube changes positions multiple times.
Continuity mistake: Sherlock is dancing with the bridesmaid towards the end. When they stop and are talking with Watson, Sherlock's hands keep switching from being behind him to in front of him, depending on the camera angle.
Chosen answer: That line of dialogue has never actually been spoken in any of the Sherlock episodes, during seasons 1-4. However, that line is written in someone's fan-fiction story online, where it's said by Sherlock and directed at Anderson.
Super Grover ★