Tomorrow is your day) is a 1984 Indian Tamil-language mystery thriller film, written and directed by A. Jagannathan.

It is a remake of the Hindi film Gumnaam (1965), itself heavily inspired by Agatha Christie's novel And Then There Were None (1939).

On the way to their destination, the plane has engine trouble and they are left abandoned in a remote seaside location.

Ravi, Vijayakanth's stunt double, died during production, and the film was dedicated to him.

[5][6] Jayamanmadhan of Kalki praised the performance of Manorama, the songs of Ilaiyaraaja but was critical of his re-recording; he felt the reveal of the murderer was lack of spice.