 During a scriptwriting workshop held by Mira Nair in 2005 , Cajetan Boy , a Kenyan writer from Nairobi , showed Vishal Bhardwaj a script about twin brothers from the city 's slums and the events that occur in their lives during a 24 @-@ hour period . Bhardwaj liked Boy 's approach to the script ; Nair and Bhardwaj discussed it and thought it was a typical Bollywood masala film . Boy sent Bhardwaj another draft of his script . Three years later , Bhardwaj asked Boy to sell him the idea , and he later bought the script for US $ 4 @,@ 000 . Bhardwaj revisited the idea and added some Bollywood elements and a dark , serious side to the script . He worked on the original idea with writers Sabrina Dhawan , Abhishek Chaubey and <unk> Sen. He included Dhawan in writing the screenplay because as he thought she would give it a " solid structure " . Bhardwaj said that during the writing of the screenplay , most of the original ideas were changed and the climax was " Indianized " . His re @-@ worked version now included one brother with a stammer and the other with a lisp . Bhardwaj said that despite the complicated structure , Kaminey is " anything but arty " and could not alienate audiences in any part of India , and that it is a simple story but with a complicated structure . Dhawan said that the film 's script was complex and has multiple stories which required excessive writing and rewriting to make each character sound distinct . 
