Eames' expression falls at Finnick's explanation, looking almost affronted when he says that he was bound. It makes a lot about Finnick make sense though; his distaste for witches, his panic after his run-in with Childermass. He doesn't need the particulars, Eames decides. Nobody binds a fae for benign reasons.

"How long since you escaped?" It seems like a fair assumption he wasn't let free.