Torchwood is a spin-off from Doctor Who, the longest-running TV science fiction series in the world. While DW is very much family viewing, Torchwood will be post-watershed for adults. Here's the BBC's press info:
Created by award-winning writer Russell T Davies, the high-octane sci-fi thriller follows a team of modern-day investigators as they use alien technology to solve crime both alien and human.
Separate from the Government, outside police jurisdiction and beyond the United Nations, the Torchwood Institute sets its own rules. Based in Cardiff, the Torchwood team delves into the unknown, battling against the impossible in a highly volatile underworld of savage aliens and monsters whilst trying to maintain their everyday lives.
Enigmatic Captain Jack Harkness is the ever-watchful leader of the Torchwood team. Gwen Cooper is initially an outsider, whose first, chance meeting with Torchwood at the scene of a brutal murder sparks within her a burning curiosity to get to the truth. She is intrigued by Torchwood and her life changes when she is catapulted into an unfamiliar and exciting world.
Second in command to Captain Jack is Suzie Costello, the hard-working hardware specialist who catalogues and strives to understand the alien devices the team comes across. Owen Harper is the arrogant, brilliant medic and Toshiko Sato specialises in all things computer, surveillance and technical. Ianto Jones, meanwhile, cleans up after the team and gets them everywhere on time.
Torchwood is written by Russell T Davies and Chris Chibnall, with contributing writers including Peter J Hammond, Toby Whithouse, Noel Clarke, Cath Tregenna, Jacquetta May and Helen Raynor.
The executive producers are Russell T Davies and Julie Gardner. Torchwood is filmed in HD (high definition).
Captain Jack Harkness is played by John Barrowman, Suzie Costello by Indira Varma, Gwen Cooper by Eve Myles, Owen Harper by Burn Gorman, Toshiko Sato by Naoko Mori and Ianto Jones by Gareth David-Lloyd.