The Scarlet Duke Is the Night Thorn

Damian Vale is mocked across the allied kingdom as a decadent vampire duke's second son. In secret, he is Night Thorn, the masked guardian who has protected the human frontier for years. When three rival races exploit a royal blood-alliance trial to seize Princess Celeste Ardent and the kingdom's military authority, Damian enters only after the king offers legal command of the northern blood riders and access to the sealed records of his mother's silver-poisoning. His public victory draws Elder Malrec out of hiding. Malrec weaponizes Damian's scandalous reputation, Celeste's devotion to Night Thorn, and a false ancestral blood-oath journey to create a killing ground inside the Bloodfang Coven. Celeste betrays Damian, believing she can end their political bond, only to become the key to the royal Sacred Silver Vault. Damian turns the trap into a recorded confession, reveals the false Night Thorn, and exposes himself as the real guardian. Yet he refuses to turn the mask into a claim on Celeste's love, choosing duty, dignity, and a clear boundary between protector and future queen.