Then was Sir Tristram missed, and no creature wist where he was become. When La Beale Isoud heard how he was missed, privily she went unto Sir Sadok, and prayed him to espy where was Sir Tristram. Then when Sadok wist how Sir Tristram was missed, and anon espied that he was put in prison by King Mark and the traitors of Magouns, then Sadok and two of his cousins laid them in an ambushment, fast by the Castle of Tintagil, in arms. And as by fortune, there came riding King Mark and four of his nephews, and a certain of the traitors of Magouns. When Sir Sadok espied them he brake out of the bushment, and set there upon them. And when King Mark espied Sir Sadok he fled as fast as he might, and there Sir Sadok slew all the four nephews unto King Mark. But these traitors of Magouns slew one of Sadok’s cousins with a great wound in the neck, but Sadok smote the other to the death. Then Sir Sadok rode upon his way unto a castle that was called Liones, and there he espied of the treason and felony of King Mark. So they of that castle rode with Sir Sadok till that they came to a castle that hight Arbray, and there in the town they found Sir Dinas the Seneschal, that was a good knight.