On Jan. 22, 1965, the day earlier than the Iranian prime minister is assassinated, a automotive drives as much as a shipwreck. Contained in the wreck, a banished political prisoner has hung himself and the partitions are lined in diary entries, literary quotes, and unusual symbols. Fifty years later, the proof, together with intelligence tape recordings, is present in a field. The contents attest to the truth that the inspector and his colleagues have been arrested, however why?