The Yorkshire Ripper hoaxer who convinced police they were hunting a killer from Sunderland: ITV drama on the hunt for Peter Sutcliffe retells how Wearside Jack derailed investigation and left serial killer free to murder three more victims

In the summer of 1979, the police revealed a recording they believed had been sent by the Yorkshire Ripper. It had in fact been made by John Humble (above, with real killer Peter Sutcliffe).

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