Dex Parios is a strong, assertive, and unapologetically sharp-witted Army veteran working as a P.I. in Portland, Oregon. With a complicated personal history and only herself to rely on, she solves other people’s messes with a blind eye toward her own.

Two young sisters find that all the mirrors in their estranged aunt's house are covered or hidden. When one of them happens upon a mirror in the basement, she unknowingly releases a malicious demon.