Acacia Sheridan is a private detective with a special gift for perceiving the supernatural. When a local coven of urban witches mistakenly summons a malevolent spirit, they look to Acacia to help track him down. Inconsistencies in the witches' story make Acacia begin to suspect they're not telling her everything—and then the murders start.

With her assistant Oliver stressing over a past bad experience with witches, a demon on the loose, and a nosy police detective wanting to know too much, Acacia's up to her elbows in supernatural trouble in this fourth installment of the Olympia Investigations series.