Torchwood2006

Yvonne:
No sign of a Captain Jack Harkness.

Gwen Cooper:
Did you search outside Cardiff?

Yvonne:
No, that never even occurred to me. 'Course I did. I went nationwide. There's about fifteen Jacks and Johns with that surname, none of them's a captain.

Gwen Cooper:
Suppose he could've made it up.

Yvonne:
The only Captain Jack Harkness on record is American.

Gwen Cooper:
That's it, he's American.

Yvonne:
And you forgot to tell me.

Gwen Cooper:
So who is he?

Yvonne:
American volunteer. Royal Air Force. 133 Squadron. Except he disappeared. Vanished off the records, presumed dead.

Gwen Cooper:
When was that?

Yvonne:
1941, at the height of the Blitz. On the morning of January the 21st, 1941, Captain Jack Harkness failed to report for duty. Never seen again until now. What's going on, Gwen, you seeing ghosts?