The season finale of “Torchwood: Miracle Day,” entitled ‘The Blood Line,’ premieres on STARZ on Friday, September 9 at 10pm ET/PT. In the original hour-long episode, the Torchwood team travels across the world on a final, desperate mission, but the Three Families are unstoppable unless a terrible sacrifice is made.Frances Fisher (Titanic, The Lincoln Lawyer) guest stars as The Mother.