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.

• Burn Gorman
• Naoko Mori
• Russell T Davies