Kahaani (2012)

The film opens with a poison-gas attack on a Kolkata Metro Rail compartment, killing the passengers on board. Two years later Vidya Bagchi (Vidya Balan), a pregnant software engineer, arrives in Kolkata from London during the Durga Puja festivities in search of her missing husband, Arnab Bagchi. A police officer, Satyoki "Rana" Sinha (Parambrata Chatterjee), offers to help. Although Vidya claims that Arnab went to Kolkata on an assignment for the National Data Center (NDC), initial investigations suggest that no such person was employed by the NDC.

Agnes D'Mello, the NDC's head of human resources, suggests to Vidya that her husband resembled former employee Milan Damji (Indraneil Sengupta), whose file is probably kept in the old NDC office. Before Agnes can provide any further help she is killed by Bob Biswas (Saswata Chatterjee), an assassin working undercover as a life insurance agent. Vidya and Rana break into the NDC office and find Damji's file, barely escaping an encounter with Bob, who is searching for the same information. Meanwhile, the attempts to obtain Damji's records have attracted the attention of two Intelligence Bureau (IB) officials in Delhi � the chief Bhaskaran K. (Dhritiman Chatterjee) and his deputy Khan (Nawazuddin Siddiqui). Khan arrives in Kolkata and reveals that Damji was a rogue IB agent responsible for the poison-gas attack. In spite of Khan's warnings, Vidya continues her search, fearing that Arnab's resemblance to Damji may have led him into trouble.

The address on Damji's record leads Vidya and Rana to a dilapidated flat. An errand boy from the neighbourhood tea stall identifies R. Sridhar, an NDC officer, as a frequent visitor to Damji's flat. Bob attempts to kill Vidya, but fails, and is run over by a Tempo during a...


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