In the series of films that Sinha made in the last eight years of his life, a trusting and idealistic man, assailed by unfortunate circumstances or hostile and scheming persons, stands out as an example of indomitable individualism. "I have always believed in individual courage and effort. I think, collective system or life hardly allows an individual to discover the infinite strength within him. I like the individual who has the courage to face any untoward situation, which is why I have shown an individual as a relentless fighter against all hazards in "Aadmi Aur Aurat", "Atanka" and "Ek Doctor Ki Maut". My protagonists in these films have practically done miracles by their own strength and self-confidence. In "Antardhaan" also, the Professor takes up the job of finding out his missing daughter. He depends only on himself and on none else, says the Director.