The Somerton Man was a Cold War spy killed by a secret code and poison

What a spy story would need, and seems to have

Set aside hindsight and ask what a real Cold War death would look like, and the Somerton Man case supplies an unusual number of the ingredients. Inside the back cover of the recovered Rubáiyát, detectives found faint indentations comprising an unlisted telephone number and five lines of capital letters that resembled nothing readable:

WRGOABABD
MLIAOI (a line struck through)
WTBIMPANETP
MLIAOI
ITTMTSAMSTGAB

No wartime or postwar cryptographer, amateur or professional, has ever broken it. That alone invites the espionage reading: real tradecraft of the era used one-time pads and book ciphers keyed to specific, hard-to-obtain editions, and a rare 1941 printing of a Persian poem, discarded in a stranger's unlocked car near where the body turned up, is exactly the kind of object a book cipher requires.

The traced phone number sharpened the picture. It led police to Jessica “Jo” Thomson, a nurse who lived only a few hundred metres from where the body was found. When shown a cast of the dead man's face, witnesses on the scene described her as visibly shaken, to the point of appearing close to fainting, yet she denied knowing him and declined to formally identify him. Investigators who spoke to her decades later found her evasive on the subject, and her daughter said in a televised interview that her mother had told her, in essence, that the truth about the man was known “at a level higher than the police force.” None of that is proof of an intelligence connection, but it is exactly the texture (a frightened contact, a withheld truth, official silence) that espionage cases genuinely have.

The dead man's own body carried a strange clue before anyone reopened the book. Pathologist Sir John Burton Cleland (the coroner's cousin, and one of the era's foremost forensic scientists) found a man in his mid-forties in startlingly fine condition, with unusually high, pronounced calf muscles and big and little toes that met in a distinctive wedge shape. One expert who examined the case for the inquest went further, testifying that he had “not seen the tendency of his calf muscle so pronounced in others as in this case,” and guessing that the wedge-shaped toes suggested “the habit of wearing high-heeled and pointed shoes”: the build, he thought, of a dancer. That guess acquired an eerie second life decades later. Jessica Thomson's son, Robin, born in 1946 and long suspected of being the Somerton Man's illegitimate child because he shared the same rare ear-cartilage shape and the same congenitally absent teeth (a combination found in an estimated one in ten to twenty million people), grew up to dance professionally with the Australian Ballet and the Royal New Zealand Ballet. A dead man built like a dancer, tied by a phone number to a woman whose own son actually became one, is the kind of detail that makes the espionage reading feel like only part of a much stranger story.

And the period backdrop was real, not invented after the fact. Adelaide in 1948 sat inside a world rapidly organising itself into two intelligence-obsessed blocs; Australia was, that same year, in the process of tightening its security relationship with British and American services after leaks were traced to Soviet contacts in Canberra. An unidentifiable man, dead of an undetectable poison, carrying a coded note and no name, is not a strange thing to suspect of espionage. It is, on its face, close to what espionage would look like if it went wrong.

What the code, the labels, and the decades actually show

Each striking detail has a mundane explanation that fits the facts at least as well as a spy story does, and in several cases better. Start with the code. Cryptographers who examined it in 1949, and researchers who have returned to it since, agree on one point: five short lines are not enough text to prove anything is a cipher at all. Computational linguist John Rehling, analysing the letter patterns in 2014, concluded the most statistically likely explanation was that the lines were initials: a personal shorthand for a list of words, names, or phrases, the way someone might jot the first letters of a poem, a prayer, or racing form notes to jog their memory. That reading fits the sample size far better than a formal cipher does, and it requires no espionage at all.

The removed clothing labels tell a similar story once placed in context. Cutting labels out of clothes was documented practice among people who wanted to vanish from a previous life (evading debt, family, a psychiatric history, or an unravelling marriage), not a signature exclusive to intelligence tradecraft. And the removal was imperfect: three separate dry-cleaning marks and a tag reading “T. Keane” survived on different garments, which is a poor result for a professionally trained operative erasing his own identity, and a plausible one for a distressed man doing it himself, hastily and incompletely.

The book cipher theory also runs into a documentary problem: no one has ever produced a name, a file, or a corroborated account from any Australian, British, Soviet, or American intelligence service placing the Somerton Man inside an actual operation. Seventy-plus years on, well past the point at which Cold War-era ASIO and Soviet files on Australia have been declassified or leaked, nothing has surfaced that names him, or ties the coded lines to a real message. The Lapstone Conference and other security meetings held in Australia that year establish that espionage was in the air in 1948, not that this man was part of it.

Most decisively, the identity itself has likely been resolved, and it points away from an intelligence background. In 2022, DNA extracted from hair embedded in the police death mask (not, notably, from the man's 2021 exhumation, whose embalmed remains yielded degraded DNA) allowed Professor Derek Abbott and genealogist Colleen Fitzpatrick to build a family tree and match living relatives on both sides. Their conclusion: Carl “Charles” Webb, an electrical engineer and instrument maker born in Footscray, Victoria, in 1905, whose known biography (an estranged wife, an engineering trade, no record of government, military-intelligence, or diplomatic service) resembles a man with a private crisis far more than a trained operative.

The dancer's build and the Thomson family coincidence resolve in the same mundane direction on closer inspection. Pronounced calf development and wedge-shaped toes are documented, ordinary markers of habitual footwear or athletic training, not evidence of a specific trade, and nothing in Carl Webb's confirmed biography as an electrical instrument maker involves the stage. The Thomson family thread resolved even more directly: genetic testing conducted alongside the 2022 identification, using DNA from Robin's daughter, Rachel Egan, who met and later married Derek Abbott himself during the course of the investigation, ruled out any biological relationship between Robin's family line and Carl Webb. The rare ear shape and missing teeth Robin shared with the dead man turned out to be a coincidence after all, not evidence of secret parentage.

Why a beach death became a spy story

The Somerton Man case earns its staying power honestly: it is one of the very few unsolved deaths in the world with a matched physical clue this specific (a torn scrap, a matching rare book, a coded note), and specificity is what makes a mystery feel solvable rather than merely sad. A death with no evidence at all fades from memory. A death with a cipher sitting right there, tantalisingly almost readable, keeps drawing people back in, certain that one more pass will crack it.

It also arrived at the perfect moment to be read as espionage. Nineteen forty-eight sat at the true beginning of the Cold War, when the reflex to see a foreign hand behind any unexplained death was neither paranoid nor unusual; it was often correct. That reasonable period instinct has simply never faded from how the case is told, even as seventy-odd years of declassified archives have failed to produce a single document connecting this specific man to any intelligence service.

Unresolved cases also attract dedicated communities that keep them alive by design. Amateur cryptographers, genealogists, and true-crime researchers have spent decades on the Somerton Man precisely because it rewards obsession: every new technique (familial DNA, forensic genetic genealogy, computational linguistics) could plausibly be the one that finally cracks it, and each new attempt generates fresh coverage and fresh theorising, spy stories included.

And the human story underneath is genuinely poignant in a way that a mundane explanation can struggle to satisfy. A man dies utterly alone, unable even to be named, with a note reading “it is finished” sewn against his body. An espionage plot gives that death a shape and a reason. A private tragedy, a struggling, possibly suicidal engineer, estranged from his family, dying unrecognised on a beach, is a sadder and much more ordinary story, and ordinary stories rarely outcompete dramatic ones for the public's attention.