Jon Jackson, the famous film director, is found savagely murdered under the railway arches of Camden Town in a gruesome re-creation of a scene from his hit gangster filmBent. His death strikes a chord with many, including the staff atLux magazine in possession of the last-ever interview with Jackson. Journalists Barry Hudson and Diana Kemp knew Jackson in the old days before he was a celebrity--Diana having known Jackson a little more intimately than most. As Diana is drawn ever closer to the killer,The Not Knowing vividly captures the seamy side of London life. Cathi Unsworth began her journalistic career at 19 on the music paperSounds. A music journalist for many years, she lives in West London.