Kahaani is essentially the story of a heavily pregnant London based Tamil woman's search for her missing Bengali husband in Kolkata, underplayed exuberantly by Vidya Balan. The supporting cast comprises a helpful cop Parambrata, a selfish detective - Siddiqui, an eccentric life insurance agent - Saswata, and a bhadralok Police officer - Khwaraj, and last but not the least, of a 300+ year old city - Kolkata seeped in the throes of celebrating the mother of all festivals - Durga Puja.
The film unfolds like the pages of a gripping novel by Agatha Christie or Sherlock Holmes and is shot like that of an Alfred Hitchcock or a Satyajit Ray. Using real people, places, and situations to underline the nuances of the story is a task that's handled brilliantly by director Sujoy Ghosh (also the co writer) whose recent claim to shame - an abysmal Aladdin, or a horrendous Home Delivery shall soon be forgotten just as Madhur Bhandarkar's debut dud was.
In addition to the sterling performances and the plot is the terrific technical support. Be it Amitabh Bacchan's rendition of Tagore's 'Ekla Chalo Re', the background songs (mostly of RD Burman), playing innocently as the characters travel the length and breadth of the city, the costumes by Sabyasachi, the 'just right and yet dramatic' background score, the non-condescending cinematography that captures the city as if it were a character, and the supreme screenplay with a spattering of real Bengali, act as just the right spices to turn this into a delicious dish, that's both exotic as well as commonplace.
Watch this film to experience something so satiating, you would surely ask for more (a rare for a thriller!). I give this a 10/10 not just because this is one of the best thrillers ever made in India, but definitely one of the best films to have ever come out of Bollywood. Kudos to the whole team! Trust me! Ami Sotthi Bolcchi!
P.S: Please do not discuss the story with anyone else, unless they have watched this film.