Aradhana (1969)

Arun meets Vandana during a vacation and very soon they secretly get married.Arun is a air force pilot an dies in a crash leaving pregnant Vandana heartbroken.As her marriage was never formalized she decides not to accept the kid her father to dies in between this.Vandana gives birth to her son who gets adopted by a childless couple and she decides to take care of him as her nanny.The child is name Suraj things are well until Shyam starts to eye her an done day while trying to molest her Suraj stabs him .But Vandana takes the blame on her spending rest of her life in jail.Years later she is to be freed from jail and the jailer takes her to his house to take care of her daughter Renu.Renu starts bonding well with Vandana and introduces her to her lover whose none other then Suraj.At the very firs moment Vandana realizes that he is her son whose exact replica of his father Arun.But decides no to break the truth as Suraj might be embarrassed.