Forbidden City (2019, 35 minutes, written, directed and photographed by Susan Thomson) is a short experimental documentary essay, filmed in Wunsdorf, just outside Berlin, Germany. This area was used over the course of the last century, as a POW camp in the First World War, as a place for Nazi communications in the bunkers there during the Second World War, and as the so-called Forbidden City after the construction of the Berlin wall. In a poetic monologue, the narrator takes a journey back to the Soviet forbidden city as well as the fields which were formerly inhabited by prisoners of war, and features their archival voices and songs on the soundtrack, from the Lautarchiv at Humboldt University. The narrator also focuses on the Irish brigade who trained in the camp during WW1, planning an Irish uprising against the British colonial empire, and the characters of Roger Casement and his translator, Jospeh Zerhusen. Casement was consequently tried the following year for treason at the Old Bailey in London. His so-called 'Black Diaries' which detailed his homosexual encounters were circulated and used to discredit him, and he was subsequently executed. The film evokes the idea of imprisonment, both at various times over the course of the last century, and in many places now. With the 30th anniversary of the fall of the Berlin wall, the film has an added relevance.