“It says everything about their relationship. It says what the bond is and the care is, and it’s everything they don’t say to each other but [John]’s allowed to say, thinking that [Sherlock]’s not there. That’s where, as a romance, it’s an incredibly British affair. There’s an awful lot of beautifully understated subtlety and nuance to it.” —Benedict Cumberbatch (ASiB DVD commentary)