Milwaukee homicide detective Ellie MacIntosh's bizarre case takes gruesome to a new level - and is eerily and frustratingly familiar. She has seen the signature work of the killer before, but cannot connect the victims. There isn't a single suspect in sight, but at least the case gives Ellie something to focus on instead of her chaotic personal life. And when a timid woman named Rachel reveals that she suspects her promiscuous and charismatic roommate, Lea, has been involved in the grisly murders, therapist Dr. Georgia Lukens is put into the untenable position.