To save her best friends, Leah must kill the most powerful Mystic alive-someone she once trusted. Sarah and Isaac are prisoners of the Librarian, condemned to catalog forbidden knowledge for eternity as payment for Leah's failed bargain. The only way to free them? Murder the King and return the stolen scroll that's become one with their flesh. But the King wields unlimited power through the Core that once fueled Legion himself. They can appear anywhere. Heal from any wound. They could exterminate entire magical species single-handedly. Desperate and out of options, Leah joins a secret rebellion to launch an ambush through the Astral Realm-the King's one blind spot. But the forbidden magic required comes with terrifying costs, pulling from the Tree of Death itself. And every moment she delays, her friends remain trapped, their humanity slipping away with each passing day. As the final confrontation looms, Leah faces an impossible choice: use the only power that can destroy an unkillable foe, knowing it will consume everything she's fought to save. In a war where her demon has no answers and ancient debts demand blood, some victories can only be paid in ash. DIVINE KING is the devastating series finale of this zero-romance urban fantasy where platonic bonds are tested by impossible choices, demon-bonded power meets Hebrew mysticism, and the line between hero and destroyer vanishes in flame.