Meanwhile Jack heads for the door, the one that was busted beyond trespass last time he was here, and finds--

--it's open.

Not wide open, not even visibly open until he gets close and starts examining it. But the doors are thrust slightly apart, a small amount of light escaping through them. He throws up dust as he gets close, the motes spiralling in and out of this almost imperceptible glow.

Someone has been through here.

He thinks he might prefer the apathy, because this makes his stomach drop.