Correct Answers

Ri Zhou... he seems like the most likely candidate... I can use this information wisely versus Nikita.

The game has changed... apparently, the Triad might be crumbling from the inside.

Connecting the Dots...

I suspect it was Ri Zhou, he is probably the one with enough resources to kill such a high-profile powerful assassin. It seemed like Ri Zhou backstabbed Paul Volkov. Paul was probably working with the Triad, this is why he and his brother were in London. But why did Ri Zhou betray Paul?