Book 14 in the much loved series, "The Horus Heresy: Primarchs" Legends abound of the glorious - or infamous - deeds of the Emperor's sons. Yet almost nothing is known of Alpharius, the most mysterious of them all, for the Lord of the Alpha Legion is unparalleled in the art of obfuscation. Such are his gifts of secrecy and deceit that even his rediscovery has remained an enigma - until now. But when the tale comes from the serpent's mouth, where does the deception end and the truth begin?.