 forces Jack to confront an old sin from his past, when he was involved in a trade effort that gave twelve orphaned children to a race known only as the '456', with the 456 having returned to Earth and now seeking larger numbers of children.Although Jack is able to save the world, he is forced to sacrifice his lover Ianto and his grandson Steven to do so, prompting him to leave Earth as he is unable to cope with his grief.The "Doctor Who" episode "The Sound of Drums" revealed that the Torchwood institute itself has been 'redeemed' by Jack, with Jack having rebuilt the organisation in the Doctor's honour after the Battle of Canary Wharf and the Dalek/Cybermen war to be a more benevolent organisation that actively seeks to help humans and aliens in peril rather than regarding all aliens as enemies regardless of their motives for being on Earth.