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According to a 1955 news item in Daily Variety, Stanley Schneider of Park Pictures optioned M. E. Chaber's novel from Tony Leader, who was to direct the production. An October 1957 Los Angeles Times item states that John Mills and Gina Lollobrigida were being considered as leads. An April 1958 Hollywood Reporter news item notes that locations were shot in Spain. When the film was released in Great Britain, its running time was 97 minutes.