Athiran is a 2019 Indian Malayalam-language psychological thriller film directed by Vivek and scripted by P. F. Mathews from a story by Vivek. It was produced by Raju Mathew through his production company Century Investments. The film stars Fahadh Faasil and Sai Pallavi with Atul Kulkarni, Renji Panicker, Shanthi Krishna and Sudev Nair in pivotal roles while Prakash Raj makes a cameo appearance. The film features original songs composed by debutant P. S. Jayhari and a musical score by Ghibran. The story is set in a psychiatric asylum.The film has many similarities with the 2014 Hollywood film Stonehearst Asylum.

Plot

Back in 1967, Lakshmi arrives home to witness her niece, Nithya, playing with a piece of thread, having been completely dissociated from reality, while surrounded by the dead bodies of her family members. Her mental state and reaction upon glancing at her aunt leads her to believe that she is the killer.