If you're still curious, this has been turned into a BBC mini-series called "London Spy". See: https://www.theguardian.com/commentisfree/2015/nov/12/london-spy-

If you're still curious, this has been turned into a BBC mini-series called "London Spy". See: https://www.theguardian.com/commentisfree/2015/nov/12/london-spy-real-life-murder-gareth-williams https://www.theguardian.com/commentisfree/2015/nov/12/london...