The picture has been called an amalgam of Alfred Hitchcock's North by Northwest (1959) and The Man Who Knew Too Much (1956).
One of a number of spy films that Senta Berger appeared in during the mid-'60s. The others were The Quiller Memorandum (1966), The Poppy Is Also a Flower (1966) and The Ambushers (1967).
One of a number of espionage films directed by Don Sharp. They include Callan (1974); Bang! Bang! You're Dead! (1966); Bear Island (1979); Hennessy (1975) and The Thirty Nine Steps (1978).
This film's title often gets confused with the similarly alternate title of "Bang You're Dead" [from Spy in Your Eye (1965)] first released around the same time.
Back-to-back consecutive spy movie for co-writer Peter Yeldhamm who had co-penned The Liquidator (1965) the previous year. Yeldham had also recently co-written such similar exotic fare as Mozambique (1964) and 24 Hours to Kill (1965) set in Beirut.