Torchwood: Miracle Day: The Blood Line

"Miracle Day: The Bloodline" is the tenth episode of season four of the science fiction television series Torchwood, and the forty-first and final episode of the series overall. It is the tenth chapter in the "Miracle Day" storyline. The episode was directed by Billy Gierhart with a script written by Jane Espenson. It first aired on Starz TV on September 9th, 2011.