Two business executives are trapped for the night on a deserted office floor by a disgruntled employee who has hacked the elevator system.

Adapted and directed by Peter Brook from the Royal Shakespeare Company’s ‘production-in-progress US’, this long-unseen agitprop drama-doc – shot in London in 1967 and released only briefly in the UK and New York at the height of the Vietnam War – remains both thought-provoking and disturbing. A theatrical and cinematic social comment on US intervention in Vietnam, Brook’s film also reveals a 1960s London where art, theatre and political protest actively collude and where a young Glenda Jackson and RSC icons such as Peggy Ashcroft and Paul Scofield feature prominently on the front line. Multi-layered scenarios staged by Brook combine with newsreel footage, demonstrations, satirical songs and skits to illustrate the intensity of anti-war opinion within London’s artistic and intellectual community.