I'm getting all these vibes from the way every case-related issue makes him look like there's something going on on the inside.

Yeah - I think the actor has a way of looking like he's thinking. and then he comes out with something surprising which is evidence that something has been going on in his head. He just looks like there's stuff going on.

And it's definitely not because he's pretty - because pretty guys don't usually attract me. I need substance.