Survivors: The Spectre Of Threads

The 1984 BBC drama THREADS depicted the effects of a nuclear attack on the city of Sheffield, where hundreds of local residents volunteered to be extras. The film's scenes of post-apocalyptic horrors were searing, but in Sheffield, its impact was devastating. More than 40 years later, explore the indelible cultural impact of what has been called - and remains - "the world's most harrowing film."