Halo: Rise of Atriox (Halo: Rise of Atriox #4)

Atriox and his Banished forces are seemingly interrupted while assaulting a UNSC forward base by a Covenant warship led by the Shipmaster Let 'Volir. With the Banished forces pushed back, Let 'Volir is able to capture Atriox. But before the Shipmaster can claim victory, Atriox presents him with an offer and reveals that he has other plans for 'Volir, his ship, and its crew.