Shammi Kapoor was impressed by the organisation of the Hollywood unit. He wished the Bombay film industry could also have that. He threw a big going away party for Rex Harrison. Shammi also mentioned that Rex had a very bad experience with the Indian customs.
Based on the James Headly Chase novel "The Vulture is a Patient Bird".
Dharmendra claimed in an interview that he didn't want to work in a Hollywood movie in the future as they lack soul.
In 1991, an Italian movie, "L' Avvoltoio può attendere (Gian Peitro Calasso)" was released, It was based on this movie .Starring Donald Pleasance as Kahlenberg, the main protagonist of the story. Other actors and actresses included Valeria D'Obici, Massimo Serato, and Sasha C. Darko.