Another dope episode.
One thing that bothered me this episode. Quentin talked to Felicity on the phone, Arrow kept saying her name, they used her as a decoy and Oliver's body guard was also there. And you mean to tell me he can't put 2 and 2 together and figure out that Oliver is the Arrow?
i think he long HAVE known since episode THREE when he 1st arrested him. Even though Diggle doubled for Oliver to get him off, I always believe Quentin knew since that moment, but pretend not to know for convenience sake. He knew Felicity was working with Arrow in the 1st season as well, so it's not like this isn't anything new.