[The enthusiasm wins him over immediately. He grins like a kid himself, just as pleased to have someone in on his plan.]

I don't want them to like it. In fact, that is exactly what I don't want. You ever build mud pies?

[He doesn't pick up Emily right away. Tony offers her his hand, still grinning as he tries to lead her to the door. Apparently because he wants to fetch some snow from outside.]

We need to build our trap first. If we manage to get them to come out, they'll leave again as soon as their job is done. We need to make sure at least one of them can't get back in the walls.