Easan is a 2010 Indian Tamil-language crime thriller film written, directed and produced by Sasikumar, directing his second film after Subramaniapuram. It stars P. Samuthirakani, Vaibhav, A. L. Azhagappan, and Abhinaya in lead roles alongside several newcomers. The music was composed by James Vasanthan with cinematography by S. R. Kathir and editing by A. L. Ramesh. It was released on 17 December 2010.

The film begins with a pub dance where girls and boys enjoy themselves to the fullest in a much-spoilt way, which leads to verbal eve teasing and results in a girl's death. Sangayya I.P.S, the Assistant Commissioner of Police of the area, is forced to twist the case because of Chezhian's influence. Chezhian, with his rich and corrupt father MLA Deivanayagam, the state minister for public works, would bail them out even if Chezhian and his friends commit multiple murders. Chezhian falls in love with a girl named Reshma, the only child of a Karnataka-based billionaire businessman K Shivraj.

Due to his influence with the Chief Minister of Tamil Nadu, State's PWD Secretary Neethirajan I.A.S lobbies for and obtains a 1-billion-dollar highway project for Shivraj, bypassing Deivanayagam. Deivanayagam is furious, and plans revenge. Through the city commissioner, he gets Sangayya and team to raid a brothel when Neethirajan is there. Caught red handed, Neethirajan surrenders to demands of Deivanayagam and pleads with Shivaraj to give 10% of the deal to Deivanayagam as a bribe. Shivaraj refuses to pay and looks for other alternatives, while neethirajan resigns from govt position. Sangayya gets furious after learning that he had been used as a pawn for a shady political deal, but his hands are tied by the police commissioner. Shivaraj also learns that Chezian and Reshma are in love. To solve both problems, he orders a hit on Chezian, which Deivanayagam spoils at the last minute. He orders Chezian to bring Reshma to their home to hold her captive. When Reshma come to home with Chezian, Deivanayagam's right-hand man Gopal advises Deivanayagam to forgo enimity and claim the 20-billion-dollar assets of Shivaraj through marriage of Chezian with Reshma. Deivanayagam agrees and takes the young pair back to Shivaraj's house. He proposes marriage between two, and Shivaraj agrees when Reshma attempts suicide after his refusal. Ecstatic, Chezian takes his father's aides to a pub and parties. He is approached by a model there and moves out with her. He goes missing after that.

One day later, Sangayya starts an unofficial investigation upon the commissioner's request. He also discovers that two classmates of Chezhian have recently died in mysterious ways. Sangayya solves the case and discovers that an 11th grade student named Easan is responsible for both events. He corners Easan in a dilapidated factory and ties him up.

Easan tells his backstory to Sangayya. His father was a government employee in their native village in Sivagangai, where he and his mute older sister Poorani did their schooling. Once Poorani finished school, they moved to Chennai so that she can pursue fashion technology. Poorani's classmates are all too rich and spoiled. She is taken by one of her classmates to a party, where she is raped by Chezhian and his friend Vinod multiple times. Easan's father, not being able to cope with the incident, commits suicide with his two children by drinking poisoned coffee, but Easan survived because he only drank a bit. Easan is rushed to the emergency, where Poorani's friend Shyamala visits him and reveals what happened to his sister. Due to the strong affection that he has for his sister, he decides to take revenge over the convicts. He finishes class 10 and starts rounding the culprits up.

Easan is a computer tech genius and used this to change the online prescription of Vinoth, so that he is killed as a medical accident. He had also kidnapped and beaten the hell out of Chezhian. This is revealed to Sangayya by Easan himself, while Deivanayagam and his assistant arrive at the scene of investigation and find Chezhian's dead body. Deivanayagam and his assistant attack Sangayya and attempt to kill Easan by setting him on fire. Sangayya saves Easan and himself from Deivanayagam and his assistant by shooting and killing them. Easan is finally admitted in a juvenile reformatory and is visited by Sangayya and his family.

Actor Vikram announced his own production company Reel Life Entertainment in July 2009 and announced that M. Sasikumar would direct the company's first film, Easan.^[1][2] Sasikumar refused to chose a title for the film until it was completed; the film was referred to by the media as Nagaram before the official title was announced.^[3] However, after much of the shoot had been completed, Vikram pulled out of the venture, citing budget constraints and the director eventually bought the film.^[4] Dushyanth and Niranjan, the two sons of actor Jayaprakash (of Pasanga fame), made their acting debuts.^[5]

Easan's soundtrack is composed by James Vasanthan, with whom Sasikumar had worked for Subramaniapuram (2008) as well. The audio launch event was held on 19 November 2010 at Sathyam Cinemas, Chennai.^[6] Pavithra Srinivasan of Rediff.com wrote, "Eesan seems to have the usual collection of kuthu, romantic and energising songs, but there's nothing that scales the heights of musical brilliance".^[7] Karthik of Milliblog wrote, "Eesan has its moments but they seem entirely random and few; James Vasanthan’s inconsistency is glaring!".^[8]

N. Venkateswaran of The Times of India wrote, "Though Eesan is not in the class of Subramaniapuram, it is a very satisfying watch nonetheless".^[9] Pavithra Srinivasan of Rediff.com wrote, "If the director had shored up the second half just as much he's worked on the first, Eesan would have been a brilliant effort all over. As it stands, it's worth a watch, but doesn't really match up to Subramaniapuram".^[10] Sify wrote, "The basic plot of Easan is simple, predictable and even cliched but it is that presentation and performances of all characters big and small that makes the film watchable".^[11]

• Easan at IMDb 
• Easan at Rotten Tomatoes