His Unholy Tithe

Inés Solano is sold to the isolated Sanctum of San Severo as its tenth human tithe. Her only chance of surviving the Blood Moon is Tadeo Escalante, the brutal priest ordered to keep her pure for sacrifice. When Inés discovers the god behind the altar is a lie, she weaponizes the rules of the cult—and the forbidden hunger consuming her jailer. To save her, Tadeo must betray his faith, face the girl he failed a decade ago, and burn the mountain that made him a monster.

Her family trades her to a mountain cult, but the executioner guarding her sacrifice may be the only sinner willing to destroy it.