Peter Ackroyd 's acclaimed novel is dramatised in two parts by Nick Fisher. Nicholas Dyer , an 18th-century architect, builds churches to the glory of God, but underpins them with his secret obsession with the old religion. Hawksmoor, a detective in contemporary London, investigates murders that mirrorthe sacrifices from 300 years before. With Phillip Jackson and Norman Rodway. Part 1. Repeated from Sunday