Detective Sergeant Cash's assignment: Stop the future from murdering the present. May 1975. St. Louis. In a snow-swept street, a cop finds the body of a man who died fif ty years ago. It's still warm. July 1866. Lidice, Bohemia. A teenage girl calmly watches her parents die as another being takes control of her body. August 2058. Prague. Three political rebels flee in to the past, taking with them a terrible secret.