Corrected entry: At the end of the pool scene, Moriarty unexpectedly returns and threatens to kill both Sherlock and Holmes, who are covered in the red laser points of unseen snipers. Sherlock counters by pointing his gun at the explosive vest still lying on the pool deck between them, implicitly threatening to blow up Moriarty and himself. Neither shows signs of backing down, and the season ends on this cliffhanger. However, the explosive has previously been referred to as Semtex and also has the characteristic reddish color. SEMTEX is a mixture of RDX and PETN which is highly shock insensitive, meaning it does not explode when shot. Moriarty and almost certainly Sherlock would both know that. (01:28:35)
Corrected entry: In the pool scene, after Moriarty leaves, Sherlock sets the gun on the floor to help John out of his coat. After he gets it off and tosses it away, he goes off screen for a few seconds. He did not pick up the gun before he left, but he comes back holding it. (01:26:45)
Correction: When Sherlock goes off screen, he goes to pick up the gun and search the area for Moriarty and the snipers. It is obvious that Sherlock picks up the gun because he is seen bending down just before going off-screen.
Corrected entry: At the Connie Prince case, when Sherlock and Watson are in the restaurant watching the news on TV about the death of Connie Prince, on the screen appears that Connie was 48 years old. But in the next scene, at the morgue, Lestrade reads from the "patient" record that she was 54. (00:38:30)
Correction: Not at all unheard of for a celebrity, or indeed anybody else, to lie about their age. The media reports give the age she claims, her medical records show her true age.
Correction: Holmes is aiming at the detonator, which is most certainly not shock insensitive. Once armed and primed, a Semtex bomb is susceptible to bullet impact - if the bullet is well placed. Holmes obviously knows that.