Kevin Whately returns for a sixth season as Inspector Lewis. He and his young partner DS Hathaway (Laurence Fox) continue solving cases in the seemingly perfect academic haven of Oxford. Lewis and Hathaway are called in to examine the brutal death of a chemistry professor recently released from prison. There may be a connection to the discovery of a murdered Oxford student reported lost for 15 years. As more casualties and suspects emerge, Lewis considers his future on the force. Edward Fox (Ghandi, "Foyle's War") guest stars.