Directed by Fritz Lang and starring Gary Cooper and Lili Palmer, this rare film mixes intrigue with the atomic threat, tension builds as a research scientist turned spy (Cooper) has to enter an occupied Europe of World War 2. 

Cooper is backed up by a host of talent including Robert Alda (father of Alan Alda of M.A.S.H. fame). The film culminates in a vicious hand-to hand duel with and Italian Gestapo agent (Marc Lawrence). This film has an intrigue all it's own and is unique in many ways. The thread holding it all together is the down home character played credibly by Gary Cooper as the simple man thrust into a complex situation.