When Nick pulls Marcus into his office and closes the door; however, when Nick crosses to the other side of his desk, the camera shows the door open behind Marcus. Then the next time, the shot shows the door closed.
When Nick and Marcus are arguing about Marcus' girlfriend calling the Manhattan Bourough President to force Marcus' case to go to trial, the door to Nick's office that he slams when the scene begins is open towards the end of the conversation when it has been closed the whole time.