Chase believes in board shorts and not in psychologists. Help didn't help - one patient's summary of a police officer who couldn't handle using his gun - those words ring truer than all House's suggestions that he talk it out, back when some kind of panic disorder kept him from doing his job.

He didn't talk it out, he drank it down and now, for the most part, he pretends it never happened.

And the suits? Either bought for him or too big - though he's bulked out a little in the last six years, enough not to look like a kid playing dress up. Chase believes in sweater vests, and in colour combinations that would blind ordinary folk.

He picks up the tooth.

"Extraction. My first week in the city - I was taking work in a clinic in the underground."