Cade Halloway had been raised to hunt monsters. He and Jack were shaped by the Order of the Covenant, a secretive organization that trained hunters to eliminate supernatural threats and powerful people they deemed corrupt. Cade followed their teachings until the Order targeted his younger sister, Callisto. Callisto possessed powerful, unstable magic, and the Order intended to sacrifice her. Cade chose his sister over everything he’d been taught. With Jack beside him, he betrayed the Order and fled with her, knowing they would be hunted relentlessly. But Callisto’s magic was becoming unpredictable. During an attempt to protect them, she performed a spell that reached somewhere beyond their reality. And it found Y/N. At first, Y/N existed only as a spirit mysteriously bound to Cade. He heard her whispers, sensed her presence and watched objects move without explanation. Jack thought he was losing his mind, but Callisto knew she had summoned something—someone—from another world. Cade wanted answers. Y/N simply wanted to understand where she was and why she had been drawn to him. Then Callisto attempted another spell, hoping to make Y/N stronger. The house shook. Lights shattered. Something crashed upstairs. Cade immediately reached for his weapon and ran toward the sound, Jack and Callisto following. They entered his bedroom expecting something monstrous. Instead, a young woman lay on the floor. She stared at her hands in bewilderment before attempting to stand. Her unfamiliar legs immediately gave way. Cade caught her. The instant they touched, he recognized the presence that had been haunting him. Y/N looked up at him, just as startled by the feeling of his arms around her. For the first time in her existence, Y/N was human.