Code of a Killer 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. Details Casts Videos Galleries Posters Season Lists Title Code of a Killer Genres Drama Crime Mystery First Air Date 2015-04-06 Last Air Date 2015-04-13 Episode Runtime 01 Hours 30 Minutes Total Season(s) 1 Total Episode(s) on All Seasons 2 Runtime 90 Production Companies World Productions David Threlfall... DCS David Baker... John Simm... Alec Jeffreys... Anna Madeley... Sue Jeffreys... Andrew Tiernan... DS Geoff Taylor... Lorcan Cranitch... DI Alan Madden... Dorothy Atkinson... Barbara Ashworth... Neil Edmond... Robin Ashworth... Hannah Walters... Kath Eastwood... Ged Simmons... Eddie Eastwood... Lydia Rose Bewley... Vicky Wilson... Jaz Deol... DC Taran Kholi... Adam Nagaitis... Ian Whenby... Robert Glenister... DCC Chapman... Siobhan Redmond... Joy Blakefield... Zara White... Liz Pascoe... Esther Coles... Mrs Pascoe... Rakie Ayola... Helena Adarkwa... Paul Copley... Sidney Jeffreys... Jessica Hargreaves... Linda Mann... Tobias Burton-Rudge... Gavin Hopkirk... Paul Lancaster... Peter Gill... Katie Lightfoot... Sheona York... Becci Gemmell... Jackie Foggin... Emma Lundy... Dawn Ashworth... Farzana Dua Elahe... Tania Patel... Behind the scenes of Code of a Killer | Behind the Scenes of Code of a Killer (Behind the Scenes) Code of a Killer | Two-part Drama | ITV (Trailer) Original Size (1920x1080) Original Size (1280x720) Original Size (1920x1080) Original Size (1920x1080) Original Size (940x1410) Original Size (709x1000) Original Size (707x1000) Original Size (960x1440) Original Size (1373x2060) Original Size (1000x1500) Original Size (1000x1500) Season 1 2 Episode(s) 2015-04-06