The detective suspects a connection between the death of a student with secret plans for advancement and the killing of well-known criminal Nicky Turnball, who was in Oxford to speak at the Union. As Lewis and Hathaway eliminate suspects from a long list of the crook's enemies, the investigation brings him into contact with old flame Diane - who also happens to be Turnball's wife. Kevin Whately stars, with Laurence Fox and Gina McKee