[MUSIC] A second case, also from the Yorkshire area and also from 1975 but continuing onwards, is the case of the Yorkshire Ripper. And the Yorkshire Ripper, he was given that title by the newspapers, was a man who murdered a series of prostitutes and several other women over a number of years. Now in 1978, before the Yorkshire Ripper had been caught, several letters were sent to the police, apparently from the Yorkshire Ripper, and also a cassette tape with the voice of Yorkshire Ripper, essentially taunting the police. And the police believed that this tape was genuinely of the Ripper, and therefore the voice they heard was his voice. Now, the voice on the tape had a particular strong accent which is called a Geordie accent, which comes from one particular part of the country. So the idea that the Yorkshire Ripper was Geordie sent the police off in the wrong direction. Well eventually, in 1981, the Yorkshire Ripper was caught, basically by good police work, and turned out to be a man called Peter Sutcliffe. But between the sending of the tape to the police and Peter Sutcliffe's arrest, there had been seven further attacks and three murders, and it turned out that the tape and the letters have not come from Peter Sutcliffe. He was not a Geordie, he did not have that accent. They were a hoax and if there had not been that hoax, the Yorkshire Ripper might have been caught earlier. Well, using the technology of 1978, there was no way to tell who had sent the letters. But in 2005, the case was re-opened. Because when you seal an envelope, you lick the edge of the envelope to wet the glue to seal it, and in 2005, they were able to extract DNA from the glue of the envelope, and it matched that of a known criminal called John Humble. So it must've been quite a surprise for him when one day the police knocked on his door to arrest him for a hoax that he'd committed almost 30 years before. And he was sentenced to eight years in prison for the crime of perverting the course of justice. [BLANK_AUDIO]
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