 The Empress, who had been hiding in hibernation at the edge of the universe, awoke and used the Torchwood company to gain the equipment to make huon particles.Lance reveals he was working for the Empress and purposely fed huon particles to Donna to help free the Empress' children.Donna and the Doctor escape, and the Empress decides to use Lance as a substitute, force-feeding him huon particles and then throwing him into the pit.