On the morning of December 1, 1948, the body of a fully-clothed man was found slumped against a sea wall at Somerton Beach, south of Adelaide, South Australia. An autopsy revealed the man had died during the night, but failed to determine his cause of death. A thorough search of his pockets produced no identifying documents, and all name tags had been cut from his clothing. Police did find in a hidden pocket a piece of paper with the words ‘Tamám Shud’ - translated as 'it is ended', torn from 11th-century Persian poetry collection, ‘The Rubáiyát’. The originating book was found some months later after it was thrown into the open window of a car parked near the beach. When the back page of the book was treated with iodine during a coronial inquest, five lines of handwritten code appeared, which experts have never managed to decipher. In the back of the book was also a phone number belonging to a nurse, known as Jestyn, who lived near where the body was found. Jestyn denied any knowledge of the man, although many theories suggest she was not telling the truth. The Somerton Man remains one of South Australia’s most enduring mysteries, as police have never been able to establish the man's identity nor the circumstances surrounding his death. Theories range from a man trying to visit his illegitimate son, to a Soviet spy murdered during the beginning of the Cold War.