On a Sunday morning in June 1986, Kevin Edwards woke up at his home in Geelong, near Melbourne, to the 06:00 BBC World Service news bulletin.
As he listened, he urgently tapped his wife Genevieve on the shoulder, telling her something terrible had happened: an Australian lifeguard had died on the other side of the world, in Newquay, Cornwall.
"We just knew it was Karl," Genevieve recalls. "I was 44 and my life stopped then."
They made some phone calls, in what proved to be a fruitless effort to find out more, before going to church as usual. A few hours later the police knocked on their door. Before the officers could explain why they were there, Kevin told them: "We already know."