Ehsan (1970)

Shalini lives a wealthy lifestyle with her widowed dad, Mohan, and a younger brother, Bobby. Her dad has been entrusted by the Government of India to safeguard a list of the location of India's secret agents worldwide. Many gangsters are recruited to try and secure this list for large sums of money, but none succeed. Then one day while Shalini is returning home, she is accosted by hoodlums and abducted. A young man, Raja, comes to her rescue, and escorts her home. She introduces him to her father, and soon both fall in love with each other. Raja becomes a frequent visitor to the Lal residence and is welcomed by everyone including young Bobby. Mohan approves of Raja, and after consulting his friend, Dinanath, arranges for Shalini to get married to Raja. What Shalini, Mohan and Bobby do not know is that Raja is a burglar, a safe-cracker, who has been recruited by an underworld Don to gain the confidence of the Lal family, and steal the list of secret agents' from Mohan's house - by hook or by crook.