<Tr> <Td_colspan="7"> Tim claims that the scrunchie, women's knickers and a cross necklace found in a lockbox in his cellar were purchased at a fete for his daughters, but DNA results prove they belonged to Alison Baldwin, a 14 - year - old from Earlridge, Cambridgeshire, found raped and strangled in 1997 . Tim denies involvement, but after it's revealed he was staying in Earlridge for a medical conference when Alison was abducted, he confesses to being a serial rapist and murderer of young girls . Without any remorse, Tim nonchalantly explains how he abducted, raped and strangled Hayley while coming across her by chance on New Year's Eve, and later takes them to the remains of another one of his victims . He confesses to their being many more victims but does not give their details . Chris reconciles with his fiancée, Jamila, and Cassie visits her father, who encourages her to take time off from work . Several months later, Cassie and Sunnie bring flowers to a memorial garden for Haylie . </Td> </Tr> <P> After Unforgotten aired its third series on ITV a fourth was announced by the broadcaster . </P> <P> Filming for the first series began in March 2015 and lasted for twelve weeks . Locations included Liverpool, the London suburbs, Kingston upon Thames, the Essex coast, Westminster, and the Fens . </P> <P> After the unexpected success of the initial series, ITV commissioned a second series, with Lang returning as writer and Wilson as director . It was shot on location by the River Lea, in the Cotswolds, and along the promenade in Brighton . </P>

Where was the first series of unforgotten filmed
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