Ruby and Nessa Laurel are ghost hunters. They locate ghosts who are haunting places - or people. It's a well-known fact that the Mill Street Theatre is haunted. And everyone knows the building closes for cleaning work during the first week in September every year. But this is a cover-up. The theatre closes because the hauntings escalate during that week, bringing a threat to human life. The owner decides these hauntings have to be investigated, and any ghosts dealt with. The Laurel sisters offer their help. Their investigations lead them to a heartbreaking story.