Naalai Manithan () is a 1989 Tamil-language science fiction action horror film written and directed by Velu Prabhakaran, and produced by Thakkali Srinivasan. It stars Ajay Rathnam playing the titular role with Prabhu, Amala and Jaishankar playing the protagonist roles. The film was inspired from the American film Silent Rage directed by Michael Miller. The film was remade in Kannada as Manava 2022. Plot In 2008 in Chennai, a doctor invents a drug which gives back life to the dead if injected within two hours of death. He works along with two other doctors. They experiment on the dead body of an orphan and succeed. Unknown to them, the drug induces side effects which makes the recipient immortal and, at the same time, feral and murderous. The orphan goes on a killing spree, and the city is soon flooded with murders. But he does not hurt the doctors as he trusts them, and returns to them every time he is wounded by bullets fired by the police. A police officer starts investigating the crimes and is soon on the trail of the orphan and the doctors after suspecting their research work. When the doctor' assistants suggest to their superior that they kill the orphan to end to the rampage, the orphan overhears it and later tracks down the assistants and kills them all. Later he kills the doctor as well. The police officer and his girlfriend finally track down the orphan, and after some intense bloodshed and fight, they roll him off a cliff in their car. Even after getting burnt, he comes back alive and attacks them. Finally, the police officer throws him into a deep watery pit, seemingly killing him, and leaves the place along with his girlfriend. However, the orphan comes out from the pit, having survived. Cast Prabhu as the police officer Amala as Prabhu's girlfriend Ajay Rathnam as immortal john Jaishankar as the doctor Thakkali Srinivasan as the doctor's assistant Jayashree as Thakkali Srinivasan's wife Janagaraj as Sergeant Sekar Disco Shanti as Dancer J Livingston as TV Presenter guest appearance Senthamarai (Guest appearance) as Amala's Father Mohan as Host (Guest appearance) Jai Ganesh as Ramesh, another assistant of Jaishankar Production Naalai Manithan marked the directorial debut of Velu Prabhakaran, who also wrote the screenplay and served as cinematographer. Thakkali Srinivasan produced the film and also acted. Ajay Rathnam made his acting debut with this film.