West Yorkshire, 2004.

Chris Gregg is now at the height of his career - a detective chief superintendent establishing West Yorkshire Police’s elite Homicide and Major Enquiry Team.

The next few months are busy.

But at the back of his mind is unfinished business: tracking down Wearside Jack, the Yorkshire Ripper hoaxer from nearly 30 years previously.

Chris has failed to persuade senior officers to re-investigate the case over the years.

Now he is the senior officer and what he says goes.

But scientists tell Chris the letters are destroyed and the tape can’t be found.

Somewhere lost in a police storeroom is a tiny fragment of evidence - just two centimetres large - which offers one final hope of identifying the hoaxer.

Will new science be able to match this with the man behind the deadly deception of the 1970s?

This episode is part 3 of 3. Written, presented and produced by Robert Murphy. To watch video clips with Chris, to see evidence from the case or to learn more, go to: https://robertmurphy.substack.com/about

This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit robertmurphy.substack.com