Saithan

Saithan
First look Poster
Tamil	சைத்தான்
Directed by	Pradeep Krishnamoorthy
Produced by	Fathima Vijay Antony
Written by	Sujatha Rangarajan Pradeep Krishnamoorthy Joe D Cruz Karthik Krishna
Based on	Aah! (Tamil novel)
Starring	Vijay Antony Arundathi Nair
Music by	Vijay Antony
Cinematography	Pradeep Kalipurayath
Edited by	Veera Senthil Raj
Production company	Vijay Antony Film Corporation
Distributed by	Auraa Cinemas
Release date	1 December 2016 (2016-12-01)
Running time	123 minutes
Country	India
Language	Tamil
Budget	₹10 crore (US$1.5 million)

Saithan (English: Satan) is a 2016 Indian Tamil psychological thriller film written and directed by Pradeep Krishnamoorthy. The film features Vijay Antony and Arundhathi Nair in the lead roles, with Charuhasan, Y. G. Mahendra and Kitty amongst others forming the secondary cast. Saithan released alongside its dubbed Telugu version, Bethaladu, on 1 December 2016. The story's inspired from Sujatha Rangarajan's Tamil novel 'Aaah!'. and also from the 2014 Hollywood movie "Lucy".

The film opens with Dinesh (Vijay Antony) and his boss (Y. G. Mahendra) visiting a psychiatrist. Here, Dinesh tells the doctor that he had been listening to a voice for a few days and it has been troubling him. Upon questioning the source of the voice, Dinesh tells that the voice sounds like that of God, if he were present really. The doctor asks Dinesh to come along with him for a personal treatment where Dinesh tells him that he had killed his friend Ravi. The doctor asks Dinesh to relax and hypnotises him in his sleep where he asks him various questions. It is revealed that a clever Dinesh had been recently married to a beautiful orphan Aishwarya (Arundhati Nair) who had contacted him through a matrimonial site. After their return from their Honeymoon trip, Dinesh starts hallucinating and listening to voices in his head. Also, his best friend Ravi who comes to help him gets killed in an accident due to Dinesh. The voice in Dinesh's head keeps telling him to die and Dinesh sees miserable things on TV screens, computer screens and distorted bruised faces near the windows. After the treatment, the doctor tells Dinesh not to wander off alone and tells his boss that Dinesh has got disturbed memories of his past life.

On returning home, a disturbed Dinesh aimlessly runs away from home and reaches Tanjavore in a train. While in the train he hears the same voice in his head directing him to that village and he names Sharma, Gopal, Natraj and Jayalakshmi. As soon as he gets down he hires an auto to find what happened to him and who is the voice. Upon investigating he finds out a picture of Sharma (Vijay Antony in his previous life) was a respected bachelor who adopted a boy Gopal and later married Jayalakshmi (Arundhati Nair). Things go smooth until Nataraj enters the school. Jaylakshmi and Nataraj get close and have an illegal baby who takes the name of Sharma as his father. Though the talks go through the village, Sharma still loves and cares for the baby. One day when Nataraj passes through Sharma's house, an angry Sharma tries to rush out and confront Nataraj. In this chaos, the baby falls down and dies. Jayalakshmi runs away after this incident. Two weeks later, both Sharma and Gopal are found dead on the banks of a river and Jayalakshmi, Nataraj are absconding. The case gets closed as they are not tracked down.