A bit niche this, but it was a huge story at the time round here.
In 1988, pub landlord Ian Simms mudered 22 year old Helen McCourt in Billinge, near St Helens. Her body was never found and he denied murdering her, but there was plenty of evidence pointing to him and he was convicted. But he would never reveal the body's whereabouts and her family tried for years to locate it (even resorting to crank 'psychics'). They campaigned for him not to be released until he revealed the location, but he never did and maintained he never murdered her. His failure to admit the offence prolonged his time in prison but, despite pleas to the Home Office by the family, he was eventually released on licence two years ago.
summary of the case & evidence:
https://en.wikipedia.org/wiki/Murder_of_Helen_McCourt Her family campaigned for a law change that prevented convicted murderers from being released without admitting where the body was, but The Prisoners (Disclosure of Information About Victims) Act 2020 was adopted too late too late to stop Simms being released.
Anyway, the c*nt has died.
Without ever revealing where he put the body.