The battle lines are drawn. As Torchwood take their places in a final attempt to find the mysterious Blessing, the enemy is waiting for them. Traitors take action at the CIA to leave Rex stranded and alone, while Jack and Gwen must strike a bargain with the devil himself in order to survive. But as Jilly Kitzinger rises in the ranks of the Three Families to discover the truth behind Miracle Day, it seems that the Torchwood team will have to make a terrible sacrifice for the sake of the entire human race...