To celebrate Laura Poitras' film, Citizenfour, winning 'best documentary feature' at this year's Oscars, we bring together the key players from the Guardian who were responsible for one of the biggest stories of the decade.

Edward Snowden's decision to blow the whistle on the activities of the National Security Agency reverberated and continues to reverberate around the world. The story led to the Guardian and the Washington Post receiving the highest accolade in US journalism: the Pulitzer prize for public service.

Alan Rusbridger, editor-in-chief of Janine Gibson, head of news Stuart Millar, and defence and intelligence correspondent Ewen MacAskill, to hear the inside track on the spy story of our age. Join the Guardian's editor-in-chief, editor-in-chief of theguardian.com , head of news, and defence and intelligence correspondent, to hear the inside track on the spy story of our age.

The evening will begin with a screening of Citizenfour, followed by a Q&A with the panel, chaired by Mark Lawson.

View the Citizenfour trailer here . We will be live streaming the panel debate after the film from the Guardian homepage from around 8.35pm.

Running time: Film screening followed by Q&A. Short 15 minute interval between film and discussion.

Wheelchair users and disabled visitors who require a carer may bring a companion free of charge. To book a free carer ticket please email guardianlive.events@theguardian.com