"In the world of logic, it's always our assumptions that lead us astray."Charlotte Ross is up to her neck in mysteries when she accepts an invitation to stay with her friend, Jane Marshall, while her apartment is under renovation. Jane and her fiancé have given up everything to move to her recently inherited estate in Illinois - a beautiful, but derelict mansion in need of major repairs. The cost of upkeep is steep, leaving Jane no choice but to hunt for the hidden Civil War treasure rumored to be on the property. Charlotte, still pining for her ex, is drawn into the intrigue, but when he falls victim to a murder accusation, the tension mounts, along with the stakes. The two couples band together to find the real killer and the elusive Tarkington treasure in a spooky, old house that has more secrets than they could ever have imagined.