The IRA’s Patrick Magee has left a bomb, under a bath, in room 629 of the Brighton’s Grand Hotel. It’s timed to go off in three weeks, three days, six hours and thirty-six minutes, at 2.54am on Friday 12 October. The day of Prime Minister Margaret Thatcher’s speech to the Conservative Party Conference in Brighton.

Or until 2:54am, when the bomb goes off. It's the biggest direct assault on a British Government since the Gunpowder Plot.

Written and presented by Glenn Patterson

Series Producer: Owen McFadden

Executive Producer: Rachel Hooper

A Walk on Air production in association with Keo Films for BBC Radio 4