In 1948, an unidentified man was found dead on an Australian beach with no wallet, no ID, and a cryptic message hidden in his clothing. Despite decades of investigation, his identity—and cause of death—remained a mystery. Was he a spy, a poisoned lover, or something else entirely? This episode unpacks one of the world’s most enduring cold cases, filled with coded messages, missing clues, and a relentless search for the truth that continues more than 70 years later.

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