In the episode, a team called Torchwood exposes information to the public about secretive concentration camps where wounded people are taken to be incinerated.
Jack (John Barrowman) later confronts Owens and learns from him that PhiCorp is as much a pawn as any other player in the system, and that whoever orchestrated the miracle has been working towards it for a very long time.
They release it, causing a public outcry, but do not affect the government's stance on Overflow Camps and the life and death category system.
With the Torchwood contact lenses, Gwen publicly broadcasts a message explaining the purpose of the Overflow Camps shortly before blowing up the Modules (where people are incinerated) at the Cardiff facility.
After inadvertently getting her sister's kids taken into care the other week, she's now gone through a Torchwood rite of passage in killing someone as Evil Colin enacts a horror movie cliche, grabbing her ankle and extending what are actually some pretty shocking and graphic scenes of violence against women.