How Did Patrick and Thomasina Tobin Die in a Spanish Villa Hot Tub? Experts Raise New Questions Over Suction Theory

Two weeks in the Spanish sun was supposed to be a rare, uncomplicated stretch of family time. Instead, on Aug 25, the Tobins’ teenage children found their parents dead in the hot tub of the villa they had rented in Cullera, near Valencia.

Patrick Tobin, 48, and his wife Thomasina, 51, had lived in London for years, building careers and raising two kids with additional needs who now had to process a horror no child should face on holiday. In the days after, Spanish investigators laid out a specific sequence of events they believed led to both deaths, centered on a rare hot tub malfunction called suction entrapment. Weeks on, the technicians who actually build and service these machines are questioning whether that sequence could have physically happened at all.

When Spanish police reached Villa Luna, they described a strong chemical smell hanging in the air and water in the tub that had gone cloudy with blood. Both bodies bore cuts and puncture-like marks, more severe on Patrick’s than on Thomasina’s, a detail that has quietly shaped the leading theory of what happened between them in their final minutes.

Some reports suggest the couple may have lain there for up to 12 hours before their children found them. Neither body was found fully submerged; both were partially outside the spa, a detail investigators haven’t fully explained but that has fed speculation about how a rescue attempt might have unfolded.

How Investigators Think the Deaths Happened

The sequence investigators pieced together starts with Thomasina becoming caught by the tub’s circulation system, whether through a mechanical fault or a sudden medical episode, and ends with Patrick dying as he tried to pull her free. In that version of events, the entrapment itself did the initial damage, and the rescue attempt is what turned a single medical emergency into two deaths.

The Valencia paper Levante-EMV reported that early autopsy findings pointed to acute cardiorespiratory failure brought on by extreme physical exertion, a finding that fits a prolonged struggle rather than a quick accident.

To test that sequence, the Guardia Civil’s homicide unit ran water tests, examined the tub’s suction system piece by piece, pulled security camera footage and searched the property for anything that contradicted or supported it. Investigators found no sign of forced entry, which is the detail doing the most work in ruling a second person’s involvement out of the sequence entirely.

How Skeptics Say the Physics Doesn’t Add Up

Once that sequence went public, the pushback came fast from people who spend their careers inside these machines, and their objection is specifically about mechanics rather than motive. Francisco Quero, a spa technician working in the Valencia area, told the Daily Mail that a residential hot tub like the one at Villa Luna runs on a motor of maybe two or three horsepower, about what you’d find in a large lawnmower.

“A baby might get stuck but not an adult,” he said, arguing the suction simply isn’t strong enough to hold a grown person in place long enough to cause death. He also pointed to a built-in safeguard: most home spas are fitted with automatic cutoffs that kill the pump every so often, which would have interrupted any entrapment before it became fatal.

Carlos Navarro, who runs the Spanish manufacturer Goccia Spa, backed him up, telling the Daily Mail he’d walked through factories all over the world and considered the scenario “practically impossible” in a home unit. Navarro did lay out one narrow way it could theoretically happen: if the protective mesh over one of the tub’s two suction holes had failed and gone unreplaced, the remaining hole could pull with more force than either hole was designed to on its own, though he still doubted it would be enough to trap an adult.

How Electrocution and Foul Play Were Ruled Out

The chemical smell at the scene sent police down a parallel track early on, testing whether faulty wiring or a gas leak from the tub’s machinery could have caused the deaths instead. That line of inquiry was ruled out, narrowing the working theories back down to a mechanical failure or a medical emergency inside the water.

Quero offered his own alternative sequence in comments to the press: an electric shock strong enough to knock someone unconscious, separate from any suction failure, followed by drowning rather than entrapment. He was upfront that this was an outsider’s guess, since he hadn’t inspected the actual equipment himself and wasn’t part of the official investigation. Combined with the absence of forced entry, Spanish authorities appear to have ruled out anyone else being at the villa, which is how the case has settled into an accident investigation rather than a criminal one.

How the Investigation Moves Forward From Here

The case stays open until toxicology and histopathology results come back, alongside a full mechanical teardown of the hot tub itself, the step that should finally confirm or rule out how the equipment behaved that day. Those results should settle whether either Patrick or Thomasina had an undiagnosed health issue, whether anything unusual turned up in their systems, and whether a specific part of the spa actually failed.