Old books and News Archives (Nicholson,,Kinsley,, Yallop) are essential to help understand what was happening.. The tape of June 17 arrived with a voice and a promise to kill again soon.. Oldfield and others were so certain the promise would be kept, they went all out after the best clue they had,, the voice..They hoped to save the next girl and by rights someone should have recognised that voice and come forward.. If he could say someone in the North was protecting him then he must have thought there were two involved with the letters and maybe the killings too. There are indications that a couple could be involved regarding Miss Whitaker and Miss Hill and Mis Moore.. An accomplice or partner was finally considered and then the press went quiet. The man with the voice was never found and Barbara Leach died in Bradford just a few hundred yards from their new Police HQ,, Oldfield knew his man,,the prediction on the tape really was a death sentence for someone,,,these letters and tape are as real as you get.... Barbara's death was connected positively with Miss Whitaker,,the triangular weapon had been used again.. Oldfield suffered a heart attack during this period and Barbara was killed while he was convalescent. It was a Policemans nightmare...