In order to do something to quiet the suspicions which the magi feared were prevailing, they did not know how extensively, they conceived the plan of inducing Prexaspes to declare in a more public and formal manner what he had been asserting timidly in private, namely, that Smerdis had not been killed. They accordingly convened an assembly of the people in a court-yard of the palace, or perhaps took advantage of some gathering casually convened, and proposed that Prexaspes should address them from a neighboring tower. Prexaspes was a man of high rank and of great influence, and the magi thought that his public espousal of their cause, and his open and decided contradiction of the rumor that he had killed Cambyses's brother, would fully convince the Persians that it was really the rightful monarch that had taken possession of the throne.
But the strength even of a strong man, when he has a lie to carry, soon becomes very small. That of Prexaspes was already almost exhausted and gone. He had been wavering and hesitating before, and this proposal, that he should commit himself so formally and solemnly, and in so public a manner, to statements wholly and absolutely untrue, brought him to a stand. He decided, desperately, in his own mind, that he would go on in his course of falsehood, remorse, and wretchedness no longer. He, however, pretended to accede to the propositions of the magi. He ascended the tower, and began to address the people. Instead, however, of denying that he had murdered Smerdis, he fully confessed to the astonished audience that he had really committed that crime; he openly denounced the reigning Smerdis as an impostor, and called upon all who heard him to rise at once, destroy the treacherous usurper, and vindicate the rights of the true Persian line. As he went on, with vehement voice and gestures, in this speech, the utterance of which he knew sealed his own destruction, he became more and more excited and reckless. He denounced his hearers in the severest language if they failed to obey his injunctions, and imprecated upon them, in that event, all the curses of Heaven. The people listened to this strange and sudden phrensy of eloquence in utter amazement, motionless and silent; and before they or the officers of the king's household who were present had time even to consider what to do, Prexaspes, coming abruptly to the conclusion of his harangue, threw himself headlong from the parapet of the tower, and came down among them, lifeless and mangled, on the pavement below.