Once he'd dealt with his shirt and the frankly ridiculous number of buttons, the rest had been easy--he doesn't need to know who he is to get undressed in a hurry--but that had brought it's own new problem. Because left without the trappings of the man he'd become when he ran away from the Agency, one of the nondescript towels around his waist, when he looked in the mirror-

His hair had been blonde back then, hadn't it? It started getting darker not long after that. Like…like Dad's.

He doesn't really hear the knock, but John's voice--he recognizes that, easily--breaks through. Calling him Jack.

"Yeah," he says, not looking away from the mirror as he wondering dimly if his voice comes out as faint as it sounds in his head.