THE UNTOLD STORY OF THE HONEYMOON DEATH DIVE FROM THE ONE PERSON WHO HAS NEVER SPOKEN - WHAT HAPPENED UNDER THE WATER?

Elizabeth Vargas' Exclusive Interview with Gabe Watson, the Man Who Was Accused of Killing His New Wife While Scuba Diving on Their Honeymoon, Airs on "20/20," Friday, March 2 on ABC

When American Tina Watson drowned while scuba diving off the Australian Barrier Reef on her honeymoon in 2003, it became a headline-making case that spanned two continents half a world apart because many suspected that her husband of 11 days, Gabe Watson, was responsible. Watson would plead guilty to negligent manslaughter in Australia and spend 18 months in prison. When he returned to Alabama, he was charged with premeditated murder as soon as he landed. But what really happened under the water, and why did Watson leave his wife there? In his first and only interview since an Alabama judge put the troubling case to rest last week, Watson answers the tough questions from ABC News Anchor Elizabeth Vargas about his marriage, his tragic honeymoon, his strange behavior, what he says really happened during that fateful scuba dive, and how he is handling the fact that Tina's family believes he got away with murder.

The exclusive report airs on "20/20," FRIDAY, MARCH 2 (10:00-11:00 p.m., ET) on the ABC Television Network.

David Sloan is executive producer of "20/20".