The Fast Show comedian Simon Day tells Matthew Parris why he's fascinated by the life and work of German author Hans Fallada. Matthew is also joined by Fallada's biographer Jenny Williams.

Hans Fallada (real name Rudolf Ditzen) was an alcoholic, a thief, a morphine addict and, prone to depression, attempted suicide twice. He lived and worked in the Germany of the 1930's and, although declared an "undesirable author," stayed in his beloved country for the duration of the Second World War. In and out of prison, sanatoriums and relationships, his volatile personal life often informed his writing (The Drinker, 1950.)

Simon Day achieved fame as "Competitive Dad" and "Dave Angel, Eco-Warrior" in The Fast Show of the 1990's. More recently he has written of his battles with various addictions, and finds parallels between his own experience of addiction, and that of Hans Fallada.