The first in a series of behind the scenes episodes exploring the BBC's latest sci-fi hit, Torchwood. Actor John Barrowman talks about being cast as Torchwood's leader Captain Jack Harkness. There is backstage footage, interviews with cast members and an in depth look into the creatures known as Weevils.

This new series goes exclusively behind the scenes of Torchwood, the latest creation from Russell T Davies. Eve Myles plays Gwen Cooper, the clever Cardiff cop who has found herself drawn into the fantastical world of Torchwood. Eve Myles and Executive Producers Russell T Davies and Julie Gardner consider the importance of Gwen's role within the Torchwood team. Plus, Edward Thomas, the designer of the magnificent "hub" setting, gives a guided tour around the film studio.

Burn Gorman plays Owen Harper, the series bad boy who witnesses a moment from history that he simply can't let go. Burn talks through what it's like to play Owen, how he handled this difficult storyline and what we can expect to see from Owen throughout the series. Executive Producers Russell T Davies and Julie Gardner also talk about how the storyline of episode three shows Owen in a new light.On set, Director Colin Teague and the cast talk through one of this episode's many action sequences. Plus, the writer and Producers talk about the importance of Cardiff as the location for this exciting drama series.

Actor Gareth David-Lloyd plays Ianto Jones, the mysterious one in Torchwood. Considering his inconspicuous role, this latest episode is a somewhat surprising turn of events for the unassuming Ianto. Cast and crew look at the downtrodden Torchwood team member and assess his betrayal. Backstage, cameras follow the filming of the attack from the cyberwoman. On set Caroline Chikezie, playing semi-converted Lisa, talks about this scene and the complex green screen elements and CGI which combine to create the pterodactyl attack. Plus, Executive Producer Russell T Davies and Creature Effects Designer Neill Gorton discuss how episode fours' Cyberwoman was conceived from script to screen.

Writer PJ Hammond and the Torchwood cast talk about this dark storyline and the surprising revelations of Jack's past. Backstage cameras follow the fairy storm hitting Jasmine's school, as well as the visually complex demise of step father Roy. CGI effects, physical effects and scary children - this episode has it all. Director Alice Troughton and Executive Producer Russell T Davies talk about the production and bringing these demonic fairy creatures to life.

Writer and co-producer Chris Chibnall talks about how the storyline of this sinister episode shapes the series, and backstage cameras follow the filming of the complex stunt scene that closes the show. Plus, Neill Gorton and his design teams reveal the secrets behind the special effects that created the bloodiest episode of the series so far.

Naoko Mori talks about how her role of Toshiko Sato has changed since the early days of the series and executive producer Russell T Davies and director Colin Teague comment on the themes that are explored through Toshiko's journey. There's definitely something about Mary and the creative team talk about how they made Toshiko's out of this world lover.

Episode director James Strong and Executive Producer Russell T Davies analyse the return of Suzie. Religion, temptation and betrayal, this latest edition of Torchwood has it all. Cast and crew look at how this surprising resurrection has affected the Torchwood team.

Actor Paul Chequer talks about playing the role of the late Eugene Jones, the Torchwood fanatic whose untimely death sparks Gwen Cooper's latest investigation. Cast and crew talk about the making of this latest episode, plus behind the scenes cameras reveal how stunt co-ordinator Rod Woodruff made Eugene's hit and run look so realistic.

Torchwood is drawn into strong personal relationships as they help three time travellers adapt to contemporary life. Actors John Barrowman, Eve Myles and Burn Gorman comment on this latest script and storyline. Plus, episode director Alice Troughton talks about the making of the show. On location, cameras witness the filming of the scenes with the small 1950's passenger plane, as well as the visually complex and moving final moments of John Ellis (actor Mark Lewis Jones).

Owen Harper is led down a dark path that leads him to confront the future of his own existence. Actor Burn Gorman talks about the filming of this latest episode and Creator Russell T Davies and Director Andy Goddard comment on the storyline of 'Combat'. Plus, cameras go backstage to witness the action sequences with The Weevils, the strange alien creatures who have slipped through The Rift.

Transported back to the height of the Blitz, Jack and Toshiko face a dark secret about The Captain's past. Actor John Barrowman and the cast and crew talk about this latest storyline and what implications this twist has for the entire Torchwood team. Plus, behind the scenes cameras look at how the art department transformed the locations to make an authentic 1940s setting.

The finale sees chaos and death on a grand scale, Executive Producer Russell T Davies and Writer and Co-Producer Chris Chibnall analyse the climax to the first series. Cast and crew talk about the making of this epic episode. Plus, cameras go back stage and see how the creative teams brought the Rift's dramatic devastation to the small screen.

Torchwood Declassified goes exclusively backstage to reveal the secrets behind some of the first episode's sensational stunt sequences and talks to John Barrowman, James Marsters and Russell T. Davies.

Director Colin Teague and producer Richard Stokes go behind the scenes on location to explain how one of the series' biggest special effects was created. Plus, actresses Eve Myles and Nikki Amuka-Bird discuss the relationship between their characters Gwen and Beth.

Naoko Mori, who plays Toshiko Sato, talks about her character's doomed relationships, including Tosh's unrequited obsession with Torchwood team mate Owen.

Gwen Cooper's unassuming fiance, Rhys, is drawn into the dangerous world of Torchwood this week and, speaking to Eve Myles (Gwen Cooper) and Kai Owen (Rhys Williams), Torchwood Declassified looks at how their relationship has grown since she joined the secret underground team, and just how he handles being a part of their latest mission. Writer Catherine Tregenna and executive producer Russell T Davies also talk about how they created one of Torchwood's most exciting alien creatures yet, and the CGI teams show the processes of how they took this from script to screen.

Gareth David-Lloyd talks about his character Ianto Jones. John Barrowman and Russell T Davies explore the revelations of Jack's past. Director Andy Goddard reveals the secrets behind the shows futuristic effects.

Freema Agyeman joins Burn Gorman on set to discuss how her character has changed since Doctor Who. Guest star Alan Dale discusses how his role has life-changing consequences for one of the Torchwood team.

Burn Gorman joins John Barrowman and creator Russell T Davies to talk about the primal force that's now wreaking havoc across the Earth.

Behind the scenes at the sci-fi drama. Burn Gorman and producer Richard Stokes discuss the challenges that faced the production team by the deceased doctor's new zombie status. Guest starring this week is the legendary Richard Briers.

Behind the scenes of Torchwood. It's the science-fiction wedding of the year. Eve Myles and Kai Owen talk about how the team filmed the scenes.

Torchwood Declassified goes behind the scenes as Captain Jack Harkness and his team go to a fright night at the movies. Talking to writer P.J. Hammond and executive producer Russell T. Davies, this episode sees just what it takes to shock an audience.

Eve Myles talks about how her character Gwen Cooper has changed. Casting director Andy Pryor pays tribute to the series' guest stars.

John Barrowman, Eve Myles, Burn Gorman, Naoko Mori and Gareth David-Lloyd talk about their characters, who are unconscious in a basement.

John Barrowman and James Marsters, plus creator Russell T Davies discuss the scenes for the climax of this thrilling series.