In 1948 a man was found dead on an Adelaide beach. Well-dressed and unmarked, he had a half-smoked cigarette by his side, but no identity documents. Six decades on we don't know who he was, how he got there or how he died. Somerton Man remains one of Australia's most mysterious cold cases. Yet it is the bizarre details of this case that make it the stuff of a spy novel. The missing labels from all his clothing. The tiny piece of paper with the words 'Tamam Shud' found sewn into the lining of the dead man's coat. A mysterious code found etched inside the very book of Persian poetry from which this note was torn. Brimming with facts that are stranger than fiction, the case has intrigued novelist Kerry Greenwood for almost her whole life. She goes on a journey into her own past to try to solve this crime, uncovering a new way of writing about true crime – and herself – as she goes.