The British High Command finds itself in the thick of a huge dilemma when it is realized that they have long been infiltrated by spies from a German intelligence group. This all happens during the preliminary stages of the Battle of Britain.
Frederick Stafford
as Captain Paul Stevens
Van Johnson
as Air Marshal George Taylor
Francisco Rabal
as Martin
Ida Galli
as Meg
Luigi Pistilli
as Maj. Kreuger
Renzo Palmer
as Sgt. Donald Mulligan
Luis Dávila
as Jacques
Christian Hay
as Gaston
Jacques Berthier
as Colonel Smith
Teresa Gimpera
as Sheila
George Rigaud
as British general
Eduardo Fajardo
as German officer
