A British spy helps a Russian scientist to defect from the Soviet Union by taking a perilous journey through the Eastern Bloc.
Kevin McNally
Johnny Donoghue
Bernard Hepton
Henry Carter
James Faulkner
Charles Mawby
Hans Caninenberg
Professor Guttman
Brigitte Karner
Erica Guttman
Stephan Meyer-Kohlhoff
Willi Guttmann
Donald Pickering
Permanent Undersecretary
Robert Lang
Deputy Undersecretary
