

08/04/1971
The outbreak of World War I places Scots officer Geoffrey Richter-Douglas in an uncomfortable position. Although his allegiance is to Britain, his mother was from an aristocratic Bavarian family, and he spent his summers in Germany as a child. When Geoffrey is approached by a German spy who offers him a chance to defect, he reports the incident to his superiors, but instead of arresting the spy they suggest that he accept her offer--and become an Allied agent. In Germany, among old friends, Geoffrey discovers that loyalty is more complicated than he expected, especially when he finds himself aboard the maiden voyage of a powerful new prototype Zeppelin, headed for Scotland on a secret mission that could decide the outcome of the war.

Michael York
as Geoffrey Richter-Douglas

Elke Sommer
as Erika Altschul

Peter Carsten
as Major Tauntler

Marius Goring
as Professor Christian Altschul

Anton Diffring
as Colonel Hirsch

Andrew Keir
as Von Gorian

Rupert Davies
as Captain Whitney

Alexandra Stewart
as Stephanie

William Marlowe
as Anderson

Alan Rothwell
as Brandner

Richard Hurndall
as Blinker Hall

John Gill
as Meier

Michael Robbins
as Cockney Sergeant

Ben Howard
as Jamie Fergusson

George Mikell
as German Officer

Arnold Diamond
as Major Proudfoot

Clive Morton
as Lord Delford

Bryan Coleman
as Colonel Whippen

Gary Waldhorn
as Harlich

Ronald Adam
as Prime Minister

Frazer Hines
as Radio Operator

Ruth Kettlewell
as Mrs. Parker

Ray Lonnen
as Sgt. Grant
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