Revealing mistake: When Melvin jumps out of the window, the person who falls out isn't actor Mark Torgl but a stunt double.
Revealing mistake: The ammo box that is removed from the purse is for blank studio type cartridges, and not ballistic ammunition.
Revealing mistake: The seen where Teddy is standing in rain talking to Charlotte in her car you can see how the rain followed his movement. There is a thicker spout of water dripping and you can see the outline of it.
Revealing mistake: When Moby and Sylvia have the car accident, extras passing by look into the camera a few times, and an elderly couple does not just that, but stops by Sammo Hung. They are not visible in the next shot (and they should be), but appear again later crossing the street on cue from another spot once Lola Forner has reversed the car. In the very last shot, another extra gets in frame for a moment, then has second thoughts (probably realised he missed his cue) and steps back out of frame for no reason. (00:42:40)