Sherlock Season 4 Finale: 13 Dumbest Moments From 'The Final Problem'

This one can be split into two parts. The first is the way that the drone makes it into 221B Baker Street, controlled from afar. Not only has the drone successfully been piloted into the flat, but it's also a motion-censored one - but of course - meaning they can't move without detonating it, and just have to stand around and stare in horror as it slowly makes its way towards them.

Naturally, then, they have to move. John and Sherlock go out the window, Mycroft down the stairs, and while they survive the iconic location goes up in flames, accompanied by a shot of Sherlock and Watson leaping from the flames, like something out of a straight-to-DVD action movie. Sherlock it ain't.