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Code of a Killer Premieres ITV 6 April with John Simm and David Threllfall



UK / ITV / x90 minute episodes / Broadcast Monday 6 April – Monday 13 April 2015 at 9.00pm

Writer: Michael Crompton / Script Editor: Gwen Gorst / Costumes: Ray Holman / Production Design: Anna Pritchard / Executive Producers: Simon Heath, Priscilla Parish / Producer: Priscilla Parish / Director: James Strong

Code of a Killer is 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 drama focuses on how Jeffreys’ science and Baker’s investigative vision created the single biggest leap in the history of criminal investigation.

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.

Only a few miles away, Dr Alec Jeffreys, played by John Simm, was a scientist at Leicester University who, on 10 September 1984, invented a remarkable technique to read each individual’s unique DNA fingerprint.

When a local teenager admitted to one of the murders but not the other, Baker asked Jeffreys to analyse the DNA evidence left at the crime scenes.

Both men were shocked to discover that the teenager was innocent, his confession false. DCS Baker then took the extraordinarily brave step to launch the world’s first ever DNA manhunt, testing over five thousand local men to track down the killer.

The series was made with the full knowledge and input of retired Professor Sir Alec Jeffreys and former Detective Chief Superintendent David

David Threllfall as DCI David Baker
John Simm as Alec Jeffreys
Lorcan Cranitch as DI Alan Madden
Robert Glenister as DCC Chapman
Anna Madeley as Sue Jeffreys
Siobhan Redmond as Joy Blakefield
Jaz Deol as DC Taran Kholi
Andrew Tiernan as DS Geoff Taylor
Hannah Walters as Kath Eastwood
Ged Simmons as Eddie Eastwood
Jessica Hargreaves as Lynda Mann
Lucy Carless as Susan Mann
Dorothy Atkinson as Barbara Ashworth
Neil Edmond as Robin Ashworth


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