In 1998, Tom and Eileen Lonergan were accidentally left behind during a scuba diving trip in the shark-infested waters of Australia’s Great Barrier Reef – a real-life disappearance that later inspired the film Open Water and fueled speculation of a staged vanishing.
Their bodies were never found, but personal diaries left behind revealed unsettling entries, including Eileen’s fear of being “caught in” her husband’s “death wish that could lead him to what he desires.”
On January 25, 1998, Tom, 33, and Eileen, 28 – who had recently completed a two-year stint with the U.S. Peace Corps in Fiji – were on an extended trip through the South Pacific.
The Louisiana couple – experienced scuba divers – had stopped in Queensland, Australia, joining 24 other passengers aboard the MV Outer Edge, a charter dive boat that took them to St. Crispin’s Reef, a stunning section of Australia’s Great Barrier Reef that’s known for its vibrant marine life.
‘Shark City’
After completing two 40-minute dives, they prepared for a third descent at a site fittingly nicknamed Fish City – a spot teeming with aquatic activity.
Local fisherman Mick Bird, who was nearby that day, later revealed that shark activity in the area was unusually high. “Every time we threw a line, we’d pull in a shark,” he said. “They should rename that place Shark City,” Bird said, per the Daily Mail.
Last time seen alive
Meanwhile Bryan Brogdan, a British charter guest who dove alongside the Lonergans during the final dive, recalled admiring a giant clam embedded in the reef with the couple, bathed in sunlight piercing through the water.
Brogdan eventually returned to the boat, but Tom and Eileen remained below – staying longer than the dive crew had advised. He was the last known person to see them alive.
Inaccurate count
Around 3:00 p.m., when all divers were expected back aboard, former skipper Geoffrey “Jack” Nairn asked crew member George Pyrohiw to conduct a headcount. It was a routine but critical safety protocol – and one that required absolute accuracy.
According to Pyrohiw, there should have been 26 people on board. But during the count, two passengers jumped back into the water to take final photos, creating confusion. Pyrohiw claimed he only counted 24, but when he reported it, he said Nairn responded: “And two in the water makes 26.” That assumption would prove to be a catastrophic miscalculation.
Missing divers unnoticed
When the Outer Edge docked in Port Douglas later that afternoon and passengers began disembarking, two dive bags were still on board – untouched. A routine inventory also revealed missing equipment, but no one raised immediate alarm.
As night fell, Tom and Eileen were still stranded somewhere in the Coral Sea. It wasn’t until later, when their unclaimed bags were opened and identified, that authorities were contacted and a large-scale search began.
Belongings recovered in water
Days later, the first physical clues appeared: dive gear and clothing washed ashore and floated in the ocean, suggesting exposure to harsh marine conditions, possibly including shark activity. However, no bodies were ever recovered despite extensive air and sea searches.
‘Ready to die’
Investigators later discovered diary entries that added emotional context to the tragedy. Tom had written about feeling “ready to die,” while Eileen expressed concern about his mental state and fears of being caught in his “death wish.”
Despite speculation ranging from accident to intentional disappearance, no financial activity, sightings, or evidence supported anything other than a tragic diving accident, leaving the case permanently unresolved.