Jack woke up, groggy as all hell, with a splitting headache and no idea where he was.

Given those first two, he was surprised he was alone. ( Waking up alone is no fun. )

Jack didn't know precisely what day it was, but he was fairly confident it wasn't Tuesday. And that was a good thing. It was also about the only thing he was sure of ( Read more... )

( Here be explanations, cut for length. And paradoxes. Also, spoilers for Doctor Who: Parting of the Ways and Torchwood. )