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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.
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.
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.
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