The River's Edge

England educated Dr. Sarath Pathirana (Vijaya Kumaratunga), who is willing to try out new methods to treat his patients, is directed towards a special patient by the Head Doctor (Henry Jayasena) at the mental hospital. This patient is a beautiful girl named Nirmala (Vasanthi Chathurani), who does not speak a single word nor trouble anyone excessively unlike any other patient at the hospital. —wikipedia