Doosra Roop (1982)

Veterinarian Dr. Naveen Thakur lives a happy life with his family, comprising of wife Bina and son Raju. While Naveen is away on a professional call to the residence of three sisters known as 'Trimurti'; Trishna, Charu and Chandni, Bina is raped by three friends Ajit, Rajesh and Sunil. Bina commits suicide. Charu takes herself responsible for Bina's death and develops a liking for Naveen. On the other side, Bina is reincarnated as dog, Kajal, to a pet owned by Charu. Realizing that her rapists have not been apprehended by the law and are roaming free in society, Kajal kills them one after the other.