Meet the Author: Philip Hensher

Author Philip Hensher speaks to the BBC's Nick Higham about his book The Emperor Waltz.

It is a novel which entwines three very different narrative strands. They involve Christians struggling on the outskirts of the Roman Empire in the 3rd Century, the German Bauhaus art-scene in the 1920s and the establishment of London's first gay bookshop in the 1970s.