So for people like me, who consider that it's all canon, let's see about fitting together all the super-seekrit stuff from the television series, the novels and the Big Finish audios.
( Spoilers for Torchwood in general, various books and audios, and some from Army of Ghosts. )
( Spoilers for Torchwood in general, various books and audios, and some from Army of Ghosts. )