Investigation) is a 1990 Indian Tamil-language action thriller film directed by R. K. Selvamani in his directoral debut.

The film stars Vijayakanth and R. Sarathkumar, while Rupini, M. N. Nambiar, Radha Ravi and Anandaraj play supporting roles.

[1] The character of the antagonist Dharma (played by Anandaraj) is loosely based on the serial killer Auto Shankar.

Dharma is an auto driver who kidnaps young women and is on the payroll of a powerful politician named R.R.

"Honest" Raj, a DCP investigating the murder of an MLA who voted for the opposite party candidate in Rajya Sabha elections, zeroes in on R.R.

The wife of the disappeared man has been repeatedly petitioning the court after her husband went missing in the police station.

Honest Raj manages to trace this lady, and she tells that the disappeared women were doctors in training in Bombay.

[3] Selvamani with the help of his friend Jothi decided to narrate the story through drawn pictures by having American films as reference.

[5] Sarathkumar portrayed the antagonist after he was recommended to the film's team by Vijayakanth's personal make-up man Raju.

[9] P. S. S. of Kalki praised the film citing that apart from action and camera, another most exciting thing is the dialogues while also appreciating the performances of the artistes.