Catch the official teaser of "Byomkesh Gowtro" that is based on the story "Rakter Daag" by Sharadindu Bandyopadhyay. The movie that stars Abir Chatterjee as the truth-seeking sleuth is directed by Arindam Sil. Sohini Sarkar portrays the character of Satyabati, while Arjun Chakrabarty is portraying a role you have never seen him before.