Nadu Iravil

Nadu Iravil is a 1970 Indian Tamil-language crime thriller film, directed and produced by S. Balachander. The film's story was written by him and dialogue was written by Ve. Laxmanan, who also composed the music. It is based on Agatha Christie's 1939 novel And Then There Were None.

Plot
Dhayanandam is a rich man who takes care of his wife Ponni, they have no children. Dr. Saravanan was the close friend of Dhayanandam, he tells about his blood cancer and he dies in 20 days. All Dhayanandam's assets are going in vain. Dr. Saravanan gives an idea, to call all his relations and they have come. Unfortunately, they are murdered one by one in the night.

Production
After the success of Bommai (1964), S. Balachander launched a film named Nadu Iravil the same year. It was based on the 1939 novel And Then There Were None, by the British writer Agatha Christie. Unlike the novel, it features the characters in an urban house rather than being stranded on an island.

Soundtrack
The soundtrack was composed by S. Balachander, while the lyrics for the songs were written by Ve. Laxmanan.

Release and reception
Though Balachander completed the film in 1964–1965, no distributor was willing to buy it, prompting him to distribute the film himself. Nadu Iravil was eventually released in 1970 and became a major success, prompting several distributors who earlier rejected the film, to return and beg Balachander for distributing it. The Indian Express wrote, "The movie succeeds as a very good entertainer entirely due to the directorial work of S. Balachander and Reddi's camera".