One of the last movie of Shammi Kapoor as Hero and one of the first movie of Sanjeev Kumar.
In the year 1973/74, Shammi Kapoor had directed and acted in a character role in Manoranjan. Sanjeev Kumar was the hero of the movie.
About 11 to 12 years after Sachaai, Shammi Kapoor and Sanjeev Kumar had appeared together in important roles in Subhash Ghai's Vidhaata & Hero. They were also to appear together in Manmohan Desai's and Ketan Desai's Allah-Rakha, but Biswajeet did the role after Sanjeev Kumar's demise.Its said that were to appear together in Qayamat Se Qayamat Tak when Nasir Hussein was to direct the movie himself. Then Nasir Hussein, handed over the movie to his son Mansoor Khan and the movie was launched with different starcast
Sachaai was one of the last films of Actress Sadhna.
Based on O. Henry's "After 20 Years".