The identity of the Somerton Man, found dead on an Adelaide beach of the same name in 1948, is one of the most mysterious unsolved cases in Australian crime history. Best known as the 'taman shud case', after a tiny piece of rolled-up paper with these words printed on it was found sewn into the dead man's pocket, the case has baffled police for decades. The phrase taman shud means 'it is finished' and is from the last page of a collection of poems called The Rubaiyat by Omar Khayyam, which was extremely popular in Australia at that time. The central theme of these poems is that one should live life to the full and have no regrets when it ends. As a result, police initially thought the man had committed suicide. With no hard evidence to back this theory and a raft of mysterious clues that have pointed detectives in other directions that have all led nowhere, the case remains unsolved.

This case is as strange as a John Le Carre plot, but as author Kerry Greenwood makes clear, the strangest part is that whoever killed him removed all possible ways of identifying him, but left him in full public view so that he had to be found. Greenwood delves into the police and coroner's files to find out why. In the process she uncovers new clues and finally cracks the code that was printed inside the famous copy of The Rubaiyat. But has she solved the case?