Ee Sabdam Innathe Sabdam(1985)

A group of unruly youth harasses Dr. Ramachandran (Mammotty) and his family. His wife (Sobhana) ends up being raped and murdered by this group. His sister Pushpa (Rohini) becomes mentally ill following the trauma. Distraught when the law doesn't give him justice, the doctor ends up being a vigilante and decides to take revenge on the people who destroyed his family.