The Samurai (1962)

Hidden Assassin (10x3)

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Tonbei goes to fellow Iga ninja, Ippeita, to get him to take him and Shintarō to Togakure ninja, Gentatsu with whom Ippeita trained since the Togakure are the next in the contest. However, Ippeita and Gentatsu are the same man He tries to kill Shintarō after drugging Tonbei and fails.