This movie is an official remake of the Spanish film"The invisible guest"There's nothing much to tell because it's a film to be watched and enjoyed and not analysed on paper and the script has intericate and intriguing twists and turns every few minutes that keeps you engrossed and entertained and busy trying to solve whodunnit yourself.
Hats off to Sujoy who even if he adopted the foreign film "The invisible guest"to make "Badla"has done it keeping Bollywood audience sensibilities in mind.