Originally the title was going to be '3 Jacks an a TARDIS' but I like Doctor better.
This thought should have crossed your mind at some point after Torchwood season 2 finale - if you've seen the 9th Doctor episode 'Boom Town'
So Jack can't cross his timeline, right? There ends up being THREE of him in Cardiff at the same time. Mind you one of them is frozen, and one is completely oblivious to anything other than the Doctor and Rose and whatever trouble the get into this time. but still, it's a bit funny.
So, yeah ...
Frozen Jack is frozen. Mortal Jack is mortal and the last one is not so patiently waiting for his younger self and younger Doctor to get on with saving Cardiff so they can leave.
Doctor Who and Tochwood (c) BBC
Please comment and let me know what you think!