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.