BattleTech Legends: Warrior: En Garde: The Warrior Trilogy, Book One

The heir apparent of the Lyran Commonwealth has been kidnapped, just when her secret betrothal to Prince Hanse Davion of the Federated Suns would cement the most powerful alliance in the Inner Sphere. Meanwhile, as two half brothers find themselves fighting on opposite sides of the Inner Sphere's endless battles, one uncovers a fiendish plot against the heir and undertakes to ensure her safety--and along with it, the safety of the entire Inner Sphere.