The Torchwood hub is a pretty secretive place. Goes with the territory of being a secret alien-hunting organisation. Torchwood has secrets nobody but Jack knows.

But know them, Jack does. Or at least, most of them. The old place still has a few surprises once in a while when the Rift's getting messy, but that's Cardiff for you.

And of all the secrets he knows, this room is not one of them. And neither is the corridor on the other side of the door. But with the Rift, who knows what's going to happen or where you're going to wind up?

That's why there's a guy in an RAF greatcoat with a vintage pistol drawn and aimed as he walks through the door into Ten Forward.