The Sixth Book Of Lost Swords : Mindsword's Story (Saberhagen's Lost Swords 6)

Now the great Mindsword is in play. Murat of Culm with the help of Coinspinner has located the Blade. Knowing Mindsword brings blind devotion to whoever wields it, Murat plans to keep the Sword sheathed until he can gift it to the beautiful Princess Kristin of Tasavalta to win her free affections and to make reparation for a grave past transgression. The power of the Sword and the intentions of the Murat’s son and advisors make for twists and turns in Murat’s once honorable plan.
Prince Mark, consort of Kristin, having neglected of his home duties while in the service of his father, finds himself in a struggle for his wife, his kingdom and his loyal friend.