Some Captain Jack questions have been answered (see below). But just how many times, between 1869 and 2008, did Jack actually miss the Doctor – the right Doctor, that is, so as not to interfere with the timelines? (Given that the Doctor regenerated immediately after leaving Jack, that means any Doctor >9) How many times did Jack let him slip away?
The Doctor meets Queen Victoria and visits the Torchwood estate. The news of this probably takes some time to reach Jack, wherever he is, by which time Sir Doctor of Tardis has no doubt moved on. Verdict: Excusable. Tooth and Claw.
A master name John Smith at Farringham School writes about traveling through time and space in his journal, and a man is zapped into dust at a dance. The fingerprint of the Doctor is there if you look hard, but all sorts of stories abound as Europe begins to panic, and the man is actually human. Verdict: Can’t blame him for not spotting this one. Human Nature/The Family of Blood.
Although the Doctor climbs a television transmitter at Alexandra Palace while lots of people have their faces nicked, this probably doesn’t make the news because of that whole coronation thing. Verdict: Understandable. The Idiot’s Lantern.
Strutting around with a timey wimey detector that goes ping when there’s stuff, the Doctor is probably trying to keep a (relatively) low profile here. But he leaves clues. On DVDs. The kind of thing you might not easily miss… unless you had a secret surveillance organisation looking for exactly that kind of thing working for you, and almost 40 years to discover the recordings. Verdict: A bit delinquent, not spotting this. Blink.
A newly regenerated Doctor arrives on the Powell estate and a race of aliens attempt to conquer Earth. This is an obvious time for Jack to be hanging around this area, as he might justifiably assume that if she survived Rose would return home sometime after date of the Blaidd Drwg incident. Verdict: Only if he’d overdone the eggnogs and slept through the whole thing could Jack be forgiven missing him this time. The Christmas Invasion
Jack knows the Doctor has visited recently, and that Rose is alive. So why didn’t he spot that Mickey had met up with the Doctor at a nearby comprehensive? And surely when the Battle of Canary Wharf was underway, he could have made the journey in to London to hook up with the Doctor? Even supposing that was too much, surely, surely, the arrival of the Racnoss ship would have told him the Doctor was around again? Verdict: Being given the slip by Mickey is shameful, and only if he were forced to rely on First Great Western (was the Torchwood car in for its MOT?) would he have missed Canary Wharf. The Christmas Invasion, School Reunion, Army of Ghosts, Doomsday, The Runaway Bride
When did Jack go to 1909 Lahore?
He did indeed spend (over) 100 years on Earth after being brought back to life by Rose Tyler. So between the end of Season 27 of Doctor Who and Series 1 of Torchwood.
Did Jack do WWII twice?
Yes. After meeting the Doctor in WWII, he lived through the whole of the 20th century including WWII, which was presumably when he met Estelle Cole.
How is Jack in a position of responsibility?
Well, actually this is still completely inexplicable.
But now there are more questions:
Is there some significance to the date Jack “accidentally” when back to (the year gelth tried to come to through the rift)?
Did Jack cause the rift?
Is it coincidence that the rift was opened in the same year Jack went back to (ooh, paradox).
How will Jack get back to the Torchwood team?
Will he still be happy Jack? Will he stick around in Who for the Christmas Special?