Naalai Manithan

Dr. Shankar is a driven scientist whose invention promises to revive the dead within two hours, but carries a dangerous side effect: immortality that breeds murderous impulses. His ambition sets off a cascade of violence that tests his ethics and control. He becomes a central figure whose choices propel the crisis.

John is the man brought back to life by Shankar’s drug; his immortality comes with a murderous compulsion that destabilizes the town. He relentlessly pursues victims, turning every encounter into a deadly confrontation. The community’s fear centers on his seeming invincibility.

Vijay is the police officer who pursues John and ultimately shoots him to halt the spree. He faces the burden of protecting civilians against an unnatural threat while grappling with the limits of his power. His actions determine whether the town can begin to recover.

Shekar serves as the deputy and ally who fights to contain John’s escape and protect those around him. He embodies duty and courage but is ultimately killed by the immortal killer, underscoring the cost of confronting the threat head-on.

Shree is Kanth’s wife who becomes a victim when John breaks into their home. Her death marks a turning point in the town’s trauma and amplifies the urgency to stop the killer. She embodies the collateral damage of the experiment.

Kanth is a colleague who urges action against John; his clash with the revived man ends in his own death. His role underscores the tension between loyalty to colleagues and the duty to public safety.

Preethi is Shree’s friend invited to a gathering; she becomes a focal point for the rescue as John’s rampage escalates. She survives the confrontation with the help of Vijay and the authorities.

Ramesh is Shankar’s colleague who attempts to cure John with an injection but is killed by the immortal killer. His intention to neutralize the threat backfires, highlighting the unpredictable danger of the drug.