This week, I play Episode One of Gareth Stack's startling psychological thriller, "The Wall in the Mind". It's the tale of a city split down the middle, and a woman whose life split with it. Claire O'Hanlon was a young woman in 1989 --an Irish national on the Eastern side of the Berlin Wall--when she was arrested by the Stasi, the East German secret police.After months of imprisonment and interrogation, Claire was set free, only to find the world had changed; the Wall had come down, and her lover, Emil Reichmann, had disappeared. In the present day, Claire returns to Berlin when she receives a mysterious cassette tape: a recording from her youth.Following the episode, I'll talk to the writer, director, and producer of "The Wall in the Mind", Gareth Stack. We discuss love, loss, sanity, and the surveillance state. It's a conversation not to be missed!