Kevin Whately and Laurence Fox return for a seventh season of the Inspector Lewis series. Hathaway has been promoted to inspector after an extended break from the force, and Lewis is enjoying retired life, until he's asked to team up with his old colleague again. With their partnership renewed under altered circumstances, the duo continues to solve crime in the seemingly perfect academic haven of Oxford. A coproduction of ITV Studios and MASTERPIECE. Thirteen years after Lewis' first successful arrest as a detective inspector, the forensics have been called into question and the case re-opened for appeal. Lewis fears the worst but nothing can prepare him for a new string of murders resembling the original murders with the original weapon. Did he arrest an innocent man? With Lewis' reputation in jeopardy, Hathaway and Maddox race to catch the killer.