A cold war prevailed between Mehmood and Manoj Kumar during the making. The latter even tried to influence the director so as to discard the song 'Hum Kaale Hain Toh Kya Hua' (picturised on Mehmood) from the film. However, the song was retained and it proved to be a smash hit and one of the highlights of the film.
Mehmood was the Highest paid actor in this movie .more than manoj Kumar and nanda which lead to a cold war between them..More from manoj Kumar
Along with Ten Little Indians (1965), this was one of two film adaptations of the 1939 novel "And Then There Were None" by Agatha Christie released in 1965.
The song Jaan Pehchaan Ho first gained notoriety among American audiences when the sequence was played by The Cramps Singer Lux Interior on Los Angeles TV request video in the early 1990's. Booleg videos of the song became a rage among alternative fans .
Footage from the movie is used in the film Ghost World (2001). The main character, Enid, is dancing along to the big dance number "Jaan Pehechaan Ho" as the film begins.