Olin Montyn kaksoisolento

The screenplay omits David Niven's part in the real operation. It was he, working for the Army's film unit as a Lieutenant Colonel, who first made contact with M.E. Clifton James. His role is taken in this movie by Major Harvey (Sir John Mills).

A picture of Queen Elizabeth 2 appears on a wall, whereas it should be her father, King George VI.

The portrait is not of Queen Elizabeth II but of her mother, who was also Queen Elizabeth (later known as "the Queen Mother"), the consort of King George VI. He died in 1952. The King's portrait is hanging opposite it on the wall of the governor's residence in Gibraltar.

The story you are about to see is the story of one of the boldest deceptions of our time in which Meyrick Clifton James, late of Her Majesty's Pay Corps, re-enacts his own real-life role. The Producer is deeply grateful to H. E. The Governor and Commander-in-Chief and those member of the Administration and Services at Gibraltar in March 1958, who rendered their invaluable assistance in the reconstruction of certain scenes of this film.

Referenced in Coronation Street: Episode #1.701 (1967)