When Queen Isoud understood that Sir Tristram was in prison she made as great sorrow as ever made lady or gentlewoman. Then Sir Tristram sent a letter unto La Beale Isoud, and prayed her to be his good lady; and if it pleased her to make a vessel ready for her and him, he would go with her unto the realm of Logris, that is this land. When La Beale Isoud understood Sir Tristram’s letters and his intent, she sent him another, and bade him be of good comfort, for she would do make the vessel ready, and all thing to purpose.

Then La Beale Isoud sent unto Sir Dinas, and to Sadok, and prayed them in anywise to take King Mark, and put him in prison, unto the time that she and Sir Tristram were departed unto the realm of Logris. When Sir Dinas the Seneschal understood the treason of King Mark he promised her again, and sent her word that King Mark should be put in prison. And as they devised it so it was done. And then Sir Tristram was delivered out of prison; and anon in all the haste Queen Isoud and Sir Tristram went and took their counsel with that they would have with them when they departed.