Continuity mistake: The car behind Julius is at various distances. It is closer when the camera is on Julius than when it switches (back and forth) to his passenger, Margot. (00:02:39)
Continuity mistake: Back and forth, there are 3 slices of pizza together when the camera is on Frank, but only 2 slices separated when directed towards Oliver and Mitch. (00:47:36)
Deliberate mistake: Blood does - but should not - drain out of deceased Mitch's mouth when he is placed on the couch and his head falls over because Oliver gets up. (00:30:10)