Gabe Watson

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. While Watson was serving his term in Australia, authorities in Alabama flagged an intention to charge him with murder at a later date. After his release, he was deported to Alabama on the condition that he would not be sentenced to death if found guilty of murder. Watson was then put on trial, but on 23 February 2012, Judge Tommy Nail dismissed the murder case due to lack of evidence.

Alabama judge Tommy Nail ruled that evidence of Watson's behaviour following Tina's death was inadmissible. Nail also blocked Tina's father from giving evidence regarding Watson's alleged attempts to increase Tina's life insurance. On 23 February 2012, Nail acquitted Gabe for lack of evidence without the defence needing to present its case. Nail said that the state's evidence was "sorely lacking" and that the prosecution could not prove that Watson had any financial motive. Prosecutor Don Valeska said that this was the first time he had had a trial end in a judge's acquittal in the 41 years he had been trying cases. Regarding the judge's decision, Thomas said, "It should have gone to the jury for them to decide."

A feature on the Death of Tina Watson was broadcast in a 90-minute account that aired on Dateline NBC on 19 May 2008. An examination of Tina's death and Gabe's subsequent trial and appeal was published by The Age on 17 July 2010. The author was Walkley Award winning investigative journalist, Peter Patrick. A feature on the death of Watson and her husband's Alabama acquittal was broadcast on an episode of the Australian 60 Minutes on 25 March 2012. Lifetime produced a made-for-TV movie, Fatal Honeymoon, based on the Death of Tina Watson, starring Harvey Keitel, Billy Miller and Amber Clayton on IMDb. It premiered on 25 August 2012. Tina Watson's death was explored on Casefile True Crime Podcast (Case 51) which was published on 22 April 2017.

In May 2010, King announced he had information not yet made public and wanted to try Watson for capital murder, asserting jurisdiction based on the theory that the alleged crime was planned in Alabama. King petitioned Australia for the evidence held by police, but was refused access until he gave an undertaking that the death penalty would not be imposed, as required under Australian law. This condition has been strongly criticised by King and Don Valeska, chief of the Attorney General's violent crime division, who stated: "If an Australian woman was killed here, we would immediately send the evidence there. We would not presume to tell the Australian authorities how to run their criminal justice system". In response to the announcement, Watson's parents came to the defence of their son, breaking their public silence on the case. Friends and family of Watson questioned whether he had any motive for the murder, noting that his affection for Tina had seemed genuine, there was no life insurance policy naming him as beneficiary, and he appeared to be emotionally devastated for an extended time following her death.

In June 2010, King assured the Queensland Attorney-General he would not seek the death penalty if Watson was tried in the U.S. for his wife's death. In August 2010 it was announced Watson would be released in November and was likely to be deported to the US, where he faced being charged with murder. Valeska stated he would pursue an additional charge of kidnapping by deception. The case was placed before a grand jury in Birmingham, Alabama in October 2010.

Watson was released from prison on 10 November 2010. He was transferred to an immigration detention centre while his deportation was delayed. During this time, Australian authorities sought further written assurances from the US Attorney General that he would not face the death penalty in Alabama if convicted of murder. Under international human rights law, Australia could not deport Watson if he faced execution in his home country. On 25 November 2010 he was deported to the United States and immediately arrested.

Alabama prosecutors charged Watson with murder at the conclusion of his prison sentence in Australia after finding what they claimed was evidence he had plotted to kill his wife while still in the United States. A Birmingham grand jury indicted Watson on murder charges in October 2010. In July 2011, the Circuit Court set the trial date for 13 February 2012; Watson was released on bond.

After resisting extradition for six months, Watson travelled voluntarily from the U.S. to Australia in May 2009 to face trial. At the trial on 5 June 2009, he pleaded not guilty to murder and guilty to, and was convicted of, manslaughter. Crown prosecutor Brendan Campbell pointed out that over time Watson had given police sixteen different versions of what had happened to Tina and that none of those versions matched what the only eyewitness had seen. When Tina was brought to the surface, her regulator was still in her mouth, her tank still had air, and tests indicated no faults with her equipment. Campbell described Watson as an experienced diver trained in rescuing panicked divers, who had allowed his wife to sink to the ocean floor without making any serious attempt to retrieve her. Watson did not inflate Tina's buoyancy control device (BCD) or remove her weight belt, and had failed to fulfill his obligations as her "dive buddy" by not sharing his alternative air source. Watson was sentenced to four and a half years in prison, to be suspended after serving only twelve months.

The Queensland Director of Public Prosecutions, Tony Moynihan SC, issued a statement, which said: "The decision to accept Mr Watson's plea of guilty to manslaughter was made after a careful and thorough examination of the admissible evidence, and was not taken lightly. Given the complex circumstantial nature of the case, Mr Watson's admission that he breached his duty to render assistance to his wife ultimately meant there was no reasonable prospect of proving, beyond a reasonable doubt, that he was guilty of murder." On 18 June 2009, Dick announced the state would appeal against the inadequacy of Watson's sentence.

The appeal was heard by the Queensland Court of Appeals on 17 July 2009. The Crown asked the court to increase Watson's prison term to two and a half years. The defence argued that Watson had had a momentary lapse in judgment, had been accused of a crime he did not commit, and had voluntarily returned to Australia to co-operate with the court, and that the penalty imposed by the trial judge was fair and just. The findings on appeal were handed down on 18 September 2009. Two members allowed the prosecution's appeal, increasing Watson's period of incarceration by six months to a total of eighteen. One justice by minority opinion was in favour of dismissing the appeal.

On 19 June 2008, the Coroner laid the following charge:

Tina was buried in her native Pelham, Alabama. Her remains were exhumed in 2007 and moved to a different lot bought by Watson. After being informed by her family that flowers and gifts were repeatedly being vandalized or disappearing from the grave site, even when chained down, police surveillance videos showed Watson removing them with bolt cutters and throwing them in trash cans. Watson later said he removed them because they were "big, gaudy, plastic arrangements". Her grave was unmarked until 2009, when Watson provided a foot marker, prompting her father to request her body be returned for reburial. In 2011, the Probate Court removed Watson as administrator of Tina's estate and appointed her father, who also requested that her school and college pictures and yearbooks be returned. Watson appealed against the ruling and refused to provide the court with an inventory of Tina's possessions. Pending Watson's trial, the Alabama Circuit Court ordered him to stay away from the grave.

In March 2005, Watson launched legal action in Alabama's Jefferson County Circuit Court to recoup the cost of the couple's trip after the travel insurance company refused a payout. He was seeking $45,000 for the accidental death plus compensation for trip interruption, medical expenses, phone calls, taxi fares, fees for extra credit card statements and unspecified punitive damages for mental and emotional anguish. The action was dismissed in May 2008 at Watson's request on the grounds the Australian investigation into his wife's death caused him "to reasonably apprehend that he risks self-incrimination in this case". His Australian legal team believed "it was not in his best interest" to pursue the damages claim and his U.S.-based lawyer, Bob Austin, added that his client would not be voluntarily "going back to Australia."

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, fellow 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.

Despite an earlier diagnosis of paroxysmal supraventricular tachycardia (PSVT), Tina began diving lessons in January 2003, and earned her certification just before her wedding to Gabe on 11 October 2003. Watson was a purportedly qualified certified rescue diver, with experience in the lake at Oak Mountain State Park. Watson had completed 55 dives by the time of their marriage, and Tina 5. The couple had planned a scuba trip in the Great Barrier Reef for their honeymoon, and flew to Sydney for a week before heading to Townsville. They chose to dive the popular yet difficult wreck of SS Yongala, a passenger ship that sank in 1911, even though Watson had limited open ocean experience and Tina had never dived in the ocean or below 9 metres. The dive company had also offered an orientation and guided dive with a dive master, which the couple had refused.

That on the 22nd day of October 2003 at the site of the historical shipwreck Yongala forty-eight nautical miles south east from the port of Townsville in the state of Queensland, David Gabriel Watson murdered Christina Mae Watson.

Christina Mae "Tina" Watson (birth name unknown) was born in West Germany on 13 February 1977, before relocating to the U.S. while still a baby. On 24 January 1980, she was legally adopted by Tommy and Cindy Thomas. They lived in Walker County, Alabama, with her younger sister before moving to Louisiana then Birmingham. David Gabriel "Gabe" Watson met Tina while they were students at the University of Alabama at Birmingham, and they began dating in January 2001.