Ek-Hi-Rasta
Amar and Malti live an idyllic, loving life with their son Raja. However, Amar makes enemies in his job and is killed, forcing Malti to remarry.
Starring Ashok Kumar, Sunil Dutt, Meena Kumari, Jeevan, Yashodra Katju, Uma Dutt, Daisy Irani, Kumkum, Kumari Naaz, Radhakrishan
Watch "Ek-Hi-Rasta" on Amazon Prime released in 1956. It's a drama and family movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie.