Though the under-construction building where Danny Mascarenhas (R. Madhavan) does his recce is shown to be opposite Verma's building, in reality, both the locations are far away. One is in Kandivali in Mumbai and the other one is in Mira Road, Mumbai.
All R. Madhavan's (Danny Mascarenhas) murder research scenes were intentionally shot in a guerrilla manner on the streets of Mumbai, to give them a realistic feel.
Actor Atharva Vishwakarma (Josh Mascarenhas) would take the oxygen cylinder and pipe home every day after shoot and would even roam around with the oxygen mask on set the whole day, in order to get comfortable with the equipment.