Series 10 - Episode 6 Discussion

[neuro]

Also I've no idea what the relevance of having Tom make a reappearance was (or why that was necessary), frankly I couldn't really care less at the moment though either.

the Home Secretary told Harry he had to use an outside source to deal with the guy that was behind the attack (Elena's boss)... so I think Harry hired Tom to go to Russia as a hitman and kill Elena's boss for him.

Actuality I think that was Harry who ordered it and the HS telling him not to let him know - though would not Gavrik/Sasha had the plotters bumped off or even taken to the cellars of Lubyanka.

Its stated that Gavrik is an oligarch so could easily have people bumped off.