He has his own very specific interests, one of which is getting what he needs from the fae. Questions like 'how' and 'why' just aren't important.

"I told you I'm an art thief," he explains patiently. "I'm good at what I do. The best. Slipping in and out unseen is too easy, it's boring. So I play with a handicap. I let everybody know exactly what I'm going to steal, and when." He shrugs.

"Every now and then I get an actual challenge."