Well, some murderers are proud of what they've done, you know? They relish in the glory of taking another's life, the temporary power it makes them feel...after all, serial killers exist, don't they? How do I know you're not one, hm?

[He chuckles to himself, like he's told himself a nice joke.]

Ah, I can almost hear your brains coming out your ears, that's how dumb of a statement that was. [Tch! He sniffs, his nose itching from the cigar smoke.] I've never seen this place before in my life, neither do I have any bloody idea as to who that is or who you are. Excuse me if I try to wrack my brains for the memories that simply aren't there, moron.

[He really does seem sincere in what he's saying, at least.]