Prisoner) is a 1951 Indian Tamil-language crime thriller film written and directed by S. Balachander for Jupiter Pictures.

Karunakaran, a generous man, meets Vijayan, a poor unemployed graduate, at the Guindy Race Course and offers a tip-off to help him make money.

The bet proves a success, but Vijayan finds Karunakaran killed when attempting to give him the winnings and is framed for the murder.

[2] Balachander developed a story based on the American film Dark Passage (1947) involving a wrongfully convicted man escaping from prison to clear his name.

[1] Initially, the film was announced with the title Raktham (Blood), and various Tamil publicity posters had the caption Velivarugirathu!