Someone is killing young women in Seattle, and dumping their bodies in New Essex, a small city in a world where the American Revolution never happened and Britain still rules North America. New Essex Constabulary Matron Gina Stone has access to both worlds through a strange door. She needs to find the murderer and stop his rampage. She'll have to follow the evidence regardless of where it takes her, 1002 Seattle, or 1895 New Essex. But more than just catching him, she has to stop how he's moving between worlds before he expands his depradations, no easy task when dealing with unknown technology.