In Vesper City, Holy Heir Elias Grave halts a public execution at sunrise, invoking sanctuary to save the wounded vampire Damian Voss. Damian is secretly the last pure-blood Vampire King, who regains his memory on his first night under Elias's protection but hides his identity to investigate a Church conspiracy and stay close to his savior. Their bond of protection deepens into love as they uncover a vast blood-trafficking network run by the corrupt Cardinal Severin, which exploits Church hospitals and academies. When Severin kidnaps Elias's student to lure him into a trap, the Holy Heir, the Vampire King, a knight, and an archivist unite to storm the operation's heart—Estate Eighteen. The conspiracy is shattered, a new Peace Treaty is signed, and Elias publicly chooses Damian as his equal and beloved partner. This is a contemporary gothic fantasy tale of institutional corruption, hidden identities, choice, redemption, and two powerful souls learning to stand side by side.
