Kahaani DVDKahaani Hindi DVD (Hindi Movie - Bollywood Film - Indian Cinema DVD)(2nd consecutive super hit movie of Vidya Balan)Star Cast:Vidya Balan, Parambrata Chatterjee, Nawazuddin SiddiquiDirector:Sujoy Ghosh Producer:Kushal Gada, Sujoy GhsoshMusic:Vishal Shekhar Lyrics:Vishal Dadlani, AvnitaDut.Genre:Action / Thriller Language: Hindi Sub-Titles: English Company:ViacomStoryKahaani Hindi movie begins with a poison gas attack on a Kolkata Metro Rail (KMR) compartment, killing the passengers on board of the train. Two years after the incident, a London-based pregnant software engineer Vidya Bagchi (Vidya Balan), arrives in Kolkata during Durga Puja. She is in search of her missing husband, Arnab Bagchi and is offered support from Satyaki "Rana" Sinha (Parambrata Chatterjee), a junior police officer from Kalighat Police Station. Although Vidya claims that Arnab came to Kolkata on an assignment for the National Data Center (NDC), initial probes suggest that no person with that name was working in NDC, or stayed in the guesthouse that Arnab had described to Vidya during their phone conversations.Agnes D'mello, head of human resources at NDC, suggests to Vidya that her husband resembled Milan Damji (Indraneil Sengupta), an ex-employee of NDC. She tells Vidya that she would try to obtain his records from NDC's old office. Before she could do so, however, Agnes is killed by Bob Biswas (Saswata Chatterjee), an assassin who works undercover as a life insurance agent. Vidya, assisted by Rana, breaks into the old office of NDC to collect documents on Damji. They barely manage to escape a close brush with Bob who has also been ordered to search for the documents.Meanwhile, the attempts to obtain Damji's records rattle two high ranking Intelligence Bureau (IB) officials: the IB chief K. Bhaskaran (Dhritiman Chatterjee) and his deputy Khan (Nawazuddin Siddiqui). Khan arrives in Kolkata and reveals that Damji was an IB agent who had gone rogue and was responsible for the poison-gas attack on the Kolkata Metro. Khan warns Vidya not to get involved into the matter as he suspects a mole in the system. Vidya, fearing that Arnab's resemblance to Milan has led him into trouble, continues her relentless search. Bhaskaran tries to get help from a top retired IB officer Colonel Bajpai (Darshan Jariwala), but he declines to take up the matter.