A British spy helps a Russian scientist to defect from the Soviet Union by taking a perilous journey through the Eastern Bloc.
Johnny Donoghue
Henry Carter
Charles Mawby
Professor Guttman
Erica Guttman
Willi Guttmann
Permanent Undersecretary
Deputy Undersecretary
Adam Percy
Ulf Becker
Heini Schalke
Jutte Hamburg
Renate
Charlie Davies
Lizzie Forsyth
