Francis Annan discusses bringing the sound of an apartheid prison to life for his directorial debut Escape From Pretoria starring Daniel Radcliffe. The movie is based on the real-life prison escape by three political prisoners in South Africa in 1979 and is adapted from the 2003 book 'Inside Out: Escape from Pretoria Prison' by Tim Jenkin, one of the escapees. Join us here during the festival for this exclusive insight into Francis's directorial debut.