Karnasubarner Guptodhon: Directed by Dhrubo Banerjee. With Abir Chatterjee, Arjun Chakrabarty, Ishaa Saha, Barun Chanda. After discovering an old riddle that talks about the hidden treasures of King Shashanka, Sona-da Subarna Sen, Abir and Jhinuk follow a perilous trail to find it.The third film in the Sona Da Franchise.