Katilon Ke Katil (1981)

A wealthy woman faces trauma when her husband is killed, and both her young sons abducted. She spends years looking for them, until one day she comes across a young man named Munna, who is wearing a family heirloom around his neck. She accepts him as her son, and takes him to live with her in her palatial house. Then she comes across another young man, Ajit, and accepts him as her elder son.