| Director | Sujoy Ghosh |
|---|---|
| Budget | ₹8 crore |
| Box office | ₹104 crore |
A poison gas attack on a Kolkata Metro Rail compartment kills all the passengers on board. Two years later, Vidya Bagchi (Vidya Balan), a pregnant British-Indian 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, offers to help.