"Mersal" is a 2017 Indian Tamil-language film directed by Atlee. The movie stars Vijay in a dual role, portraying both a doctor and his vengeful twin. It combines elements of action, drama, and social commentary, focusing on issues within the healthcare system. The film features a strong supporting cast, including Samantha Ruth Prabhu and Kajal Aggarwal. "Mersal" was well-received for its engaging storyline, music composed by A. R. Rahman, and impressive visuals. It became a commercial success and sparked discussions about medical ethics and corruption in India.