In the second of a two-part True Crime story exclusive to Mail+, award-winning Daily Mail crime writer Stephen Wright revisits one of his first and most horrifying cases, the 'House of Horrors' in Cromwell Street, Gloucester, which led police to the dismembered remains of nine young women. On the 25th anniversary of Fred West's death, Mail+ talks to biographers, experts and police involved in the case to ask, how could a seemingly normal family perpetrate such evil... and could it happen again? 

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