Streaming availability in United States
Where to Watch Black Mail (1973)
Kailash becomes rich when his uncle develops a new solar powered formula to save energy. He courts Asha whose jealous fiance plots to use her to blackmail Kailash into revealing the secret formula.
DramaThrillerRomance 146 min
Where to Watch
Hoopla 
Fawesome Watch with ads
Mometu Cast
- Dharmendra as Kailash Gupta
- Shatrughan Sinha as Jeevan
- Madan Puri as Professor Ramakant Khurana
- Iftekhar as Mr. Mehta
- Rakhee Gulzar as Asha Mehta