Vidya balan is back.as durga rani Singh, the protagonist of kahaani 2, which is not a sequel to the first part, but a stand-alone second instalment of a series that director Sujoy Ghosh is interested in fashioning.The first Kahaani had Balan play a heavily pregnant woman in search of a missing husband. It was set in Kolkata, and that was a win. Sated with the too-familiar by-ways of Delhi-Mumbai Kolkata was refreshing watch the movie nice to watch