Detective Byomkesh Bakshy! is a 2015 Indian mystery thriller film directed by Dibakar Banerjee and produced by Banerjee and Aditya Chopra. The film is based on the fictional detective Byomkesh Bakshi created by the Bengali writer Sharadindu Bandyopadhyay. The film stars Sushant Singh Rajput, Anand Tiwari and Swastika Mukherjee in principal roles.