To work a possession case, Dominik and Belasco seek the help of Trinity, a sharp, no-nonsense witch. But Trinity has problems of her own, as another witch in her area can't get her raw power under control. Meanwhile, Emily and her sister venture out on their first assignment, and Belasco's encounter with a victim from a previous case could spell heartbreak for them both. Then there's the small matter of a vampire moving into the Safe House.