It's a trilogy of books by Pat Barker about Billy Prior, a sadistic, bisexual, working class lieutenant in the First World War. I have writed Regeneration/Torchwood crossovers before but this will be an EPIC STORY of Billy Prior ending up in mid-second-season Torchwood and his sexing of Ianto (which starts off as being purely to piss off Jack but ends up being TWUE LUB.)

And I think I'm going to have to put in some plot. I don't think I can manage twenty thousand words of sexing.