Due to the graphic nature of this killer's crimes,

listener discretion is advised.

This episode includes discussions of murder and assault

that some people may find offensive.

We advise extreme caution for children under 13.

From the years of 1969 to 1981, a serial killer known as the Yorkshire Ripper,

freely roamed the streets of Yorkshire England.

As the body count rose, the entire country was desperate to find this violent murderer.

So desperate were the British police that they would begin one of the largest and most expensive manhunts in history

It was an investigation that would cost more than four million British pounds.

That's equivalent to over 20 million US dollars today.

It took over 1 million hours of tiresome police work,

investigative work that would be widely critiqued and ridiculed for years to come.

The exhaustive effort led the police to interview over 250,000 people.

And the worst part was, one of those people was the Yorkshire River himself, a man

named Peter Sutcliffe. Before arresting him, they questioned the notorious serial

killer on nine separate occasions.

Hi, I'm Greg Polson, and this is serial killers. Today we're continuing our deep dive into the life of Peter Sutcliffe and how we managed to evade the police for so many years.

I'm here with my co-host Vanessa Richardson.

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