Afterburner's Martyn Roberts and Dark Radio

Dunedin fringe veterans Afterburner follow up their award-winning show Dark Matter of a few years ago with a piece called Dark Radio, that's about play at the New Zealand Fringe Festival in Wellington. It promises a "theatre of atmosphere" experience that takes audiences back to the Cold War of the 1980s. Secrets and suspense, lies and spies - you're invited to immerse yourself between the radio waves. Afterburner's director and designer Martyn Roberts talks to Simon Morris.