Plans for a romantic weekend celebrating their recent engagement at a charming inn go awry when Detective Matt Parker and bookstore owner Jessie Reynolds are suddenly pulled into another case. A missing girl's ghost, an antique key, and an improbable journey take Jessie into another dimension to solve the murder, leaving Matt behind to wonder if he will ever see her again. Bullets fly and sparks ignite—as the past and the present collide, in their most unusual case to date.