Roy was apparently taken out because people thought he may turn and inform. So if this is the case how come they didn't also take out the gemini twins what was so diffrent about them, that the powers in charge didn't think they would turn.
I was thinking about this today and just couldn't figure out why.
The only reason i can think is that they'd never met Paul and had been taking orders directly from Roy meaning they hadn't dealt directly with Nino.
