George C. Scott as Thomas Hudson

David Hemmings as Eddy

Gilbert Roland as Captain Ralph

Hart Bochner as Tom

Susan Tyrrell as Lil

Richard Evans as Willy

Claire Bloom as Audrey

Julius Harris as Joseph

Brad Savage as Andrew

Michael-James Wixted as David

Hildy Brooks as Helga Ziegner

Jessica Rains as Andrea

Walter Friedel as Herr Ziegner

Charles Lampkin as Constable