After a year together, wolf shifter Derek Williams and vet Brian O'Donogue decide to marry. All Brian wants is to be legally part of Derek's family, after his own disowned him for being gay. As far as Derek is concerned, he already belongs to his mate, heart, body, and soul. But their plans are put on hold when Derek discovers an injured young shifter, Tommy, one night while running as a wolf.

When they learn the truth behind Tommy's presence in Washington, they are quickly drawn into a war that has waged in the shadows for decades. Brian, Derek, and their allies must fight against the Knights and their leader, Arcas, to prevent them from attaining an ancient scroll, one piece of a weapon that can destroy all shifters.

When worlds collide, no one will be spared.

Second Edition with revised text.