
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.

as DCS David Baker

as Alec Jeffreys

as Sue Jeffreys

as DS Geoff Taylor

as DI Alan Madden

as Barbara Ashworth

as Robin Ashworth

as Kath Eastwood

as Eddie Eastwood

as Vicky Wilson

as DC Taran Kholi

as Ian Whenby

as DCC Chapman

as Joy Blakefield

as Liz Pascoe

as Mrs Pascoe

as Helena Adarkwa

as Sidney Jeffreys

as Linda Mann

as Gavin Hopkirk

as Peter Gill

as Sheona York

as Jackie Foggin

as Dawn Ashworth

as Tania Patel