Diving death under suspicious circumstances in 2003
Tina Watson was a 26-year-old American woman from Helena, Alabama, who died while scuba diving in Queensland, Australia, on 22 October 2003. Tina had been on her honeymoon with her new husband, American Gabe Watson, who was initially charged by Queensland authorities with his wife's murder. Watson pleaded guilty to manslaughter and was sentenced to a term of imprisonment. Evidence presented at the trial included Watson's differing accounts of what had happened on that day, of the couple's diving experience (or lack thereof), and of Tina's life insurance.
https://en.wikipedia.org/wiki/Death_of_Tina_Watson