Oh, this was just beautiful. I can so picture this happening; it needed to be filled in, and everything works, from the way Jack's noticing that the rest of the team has tightened up (the Owen-Ianto repartee is priceless) to Jack's confession of how he saw Ianto die in the year that didn't happen. Lovely and heartbreaking, but not so sad I can't be hopeful for them for what's to come.