King cobra)[1] is a 1974 Indian Tamil-language romantic drama film written, produced and directed by N. S. Manian.

The film stars Srikanth, Manjula, Shubha and Major Sundarrajan.

It was released on 25 July 1974 and became a commercial success, with Shubha winning the Chennai Film Fans' Association Award for Best Supporting Actress.

While on a trip to another place, Krishnamurthi meets Alamelu in a five-star hotel as a prostitute; she reveals that her husband sold her into flesh trade and she had turned into a prostitute, and upon realising that Krishnamurthi loves Margaret, advises him not to leave her.

Vaathiyar, accused now of ruining Alamelu's life, realises that Krishnamurthi was right and he was wrong.

Raja Nagam is a remake of the Kannada film Naagarahaavu (1972),[2] itself based on three different novels: Nagarahavu, Ondu Gandu Eradu Hennu and Sarpa Mathsara, all written by T. R. Subba Rao.

[3][4] The remake was directed by N. S. Manian, who also produced the film under Jagajothi Pictures, and wrote the screenplay.

[5] Kanthan of Kalki praised the film for the cast performances, Manian's dialogues and direction, and the cinematography.

[8] Shubha went on to win the Chennai Film Fans' Association Award for Best Supporting Actress.