Serena Blythewood

Sera Hudson, last heir of the fallen House Hudson, infiltrates the heart of Fenris Keep disguised as a battlefield physician, bent on avenging her family’s massacre by killing Cain Elvis—the legendary “Crimson Moon Blade” Alpha. When her poisoned scalpel fails, she becomes Cain’s reluctant prisoner and is bound to him by the forbidden Vow-Blood Rite, forging a psychic link that shares every wound, memory, and heartbeat. Forced into his war council as a strategist, Sera discovers the price of vengeance is far deeper than she ever imagined.

As they plan battles against human fortresses and survive ambushes, Sera senses hidden truths in Cain’s scars and haunted past. Torn between the Assassin League’s demands and her growing empathy for the Alpha she vowed to kill, she uncovers a century-old conspiracy: her own father and the human king orchestrated her people’s slaughter. Branded a traitor, Sera risks everything to expose the lie beneath the war.

Their flight as fugitives leads them to the Wolf Council, where betrayal erupts into violence. In a final gambit at Dawn Gorge, Sera detonates an inferno that shatters the League’s power—and nearly destroys the psychic bond that saved them both. Five years later, as the “White Raven” envoy, Sera returns to Fenris, her scar a testament to sacrifice and hope. Reunited under a blooming moonlily garden, she and Cain renew their oath—no longer bound by blood, but by a shared promise to heal two nations that once bled for lies.

Vow of the Blood-Moon

Snow swirled around the edges of the subterranean citadel as Sera Hudson was escorted into a vaulted chamber by two Assassin League sentries. Her wrists, still free of Fenris fetters, throbbed with the fading ache of freedom she had tasted at Lykaon. At the chamber’s center stood her former mentor, Code-Name Aster, draped in silk-lined leather and lit by a single torch. Chains of obsidian looped from the ceiling, clinking softly in the draft.


Aster’s pale smile gleamed in the torchlight. “Welcome, Oath-Breaker. I see the Alpha still trusts you—and that you escaped his petty council.” He gestured to the chains. “I trust your lupine friend will not attempt rescue. His armies are tied up with fools in Lykaon. You, however, are here to serve your League.”


Sera squared her shoulders, gripping the hilt of a hidden dagger at her thigh. “I serve no one but the truth.”


Chapter 15 – Oath-Breaker’s Gambit