More details have emerged about the fourth series of sci-fi dramaTorchwood.Starz has announced that The New World will follow CIA agent Rex Matheson as he "investigates a global conspiracy [and] finds himself unearthing a threat which challenges the entire human race". Rex is described as a Harvard-educated "golden boy" who is "dangerous, dazzling [and] reckless". The new ten-part series of the Doctor Who spinoff will also see the return of regular Torchwoodcharacters Captain Jack Harkness (John Barrowman) and Gwen Cooper (Eve Myles). Gwen will be shown living peacefully in Wales with husband Rhys (Kai Owen) and new baby Anwen when she encounters a "new, epic danger" that will "push [her] to the limit". Having left Earth at the conclusion of previous miniseries Children of Earth, Harkness will be drawn back to the Torchwood institute by "his unstated love for Gwen". Torchwood: The New World will air in 2011 on BBC One in the UK and on Starz in the US.