Grandmaster is a 2012 Indian neo-noir thriller film written and directed by B. Unnikrishnan, produced by Ronnie Screwvala and Siddharth Roy Kapur. The film stars Mohanlal in the lead role while Narain, Priyamani, Anoop Menon, Babu Antony and Jagathy Sreekumar play major supporting roles. The movie is loosely based on Agatha Christie's novel The A.B.C. Murders. MalluDeals.com gave Grand Master the ranking of No 5 among the Top 10 Malayalam Movies of 2012.