Tony watched Loki carefully, then looked at Thor. "Look, I need you to be honest with me and tell me everything that's going on. I'm going to have to tell Fury, because I'd rather he find out from me than have a bunch of agents show up at the tower. You know he'll do what he can to try and help."
Or capture Loki again and put him underground in a concrete building, Tony thought, and he had to admit the idea didn't bother him terribly much.