Sinclair takes another step back, but one more will put his back at the window.

He's obviously talking about Doctor Tenenbaum, the only person who's still alive. Probably the only person who realized what they did was about eight hundred shades of seriously fucked up.

But the fact that it doesn't work anymore takes another load off Sinclair's mind. That's one less internal battle to fight.

"How'd you break it?" he asks, keeping his tone quiet.