Novelist Christopher Isherwood arrives in Berlin in the 1930s to stay with poet WH Auden, his friend and occasional lover, and is thrilled by the city's thriving gay subculture. However, the failure of a love affair leaves him heartbroken - so he sets out on a journey of self-discovery among the chaos of the German capital. Period drama based on the author's book, starring Matt Smith, Pip Carter, Toby Jones, Imogen Poots and Lindsay Duncan