Best Thriller movies of 1980 on prime

Actors : Vinod Mehra, Vinod Khanna, Jeetendra, Dharmendra,
Directors : Ravi Chopra,

A dedicated railway employee's plan to introduce an express train result in sabotage.

Actors : Naseeruddin Shah, Amrish Puri, Smita Patil, Om Puri,
Directors : Govind Nihalani,

A public prosecutor discovers the harsh realities about life of the scheduled tribes in India during 1980s while defending a case of a tribesman charged of murdering his wife.

Actors : Kaajal Kiran, Navin Nischol, Vidya Sinha, Om Shivpuri,

Dharamdas is killed by Dhanraj and his man later one by one Dharamdas killers are killed but it puts question to everyone as whose behind all this killings?