 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.
