Every season of Code of a Killer ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Code of a Killer!

David Threlfall takes the role of David Baker who between 1983 and 1987 headed up the investigation into the brutal murders of two Leicestershire schoolgirls, Lynda Mann and Dawn Ashworth.

Episode 1

With plenty of publicity, the local teenager is released and the world is introduced to DNA fingerprinting for the first time. In the villages of Narborough and Enderby there is a complete sense of fear that a murderer is living amongst them.

Episode 2

Based on the extraordinary true story of Alec Jeffreys' discovery of DNA fingerprinting and its first use by Detective Chief Superintendent David Baker in catching a double murderer.

The Best Seasons of Code of a Killer

The Best Seasons of Code of a Killer

Season 1