Even though Professor Kingsley has just had brain surgery, close ups of his head reveal no scars whatsoever.
Professor Kingsley screams and throws his hands up before the car is doing anything more than moving forward and is not headed in his direction.
During his gunfight with police, the kind of revolver used by Red Cannon keeps changing from shot to shot.
When George and the doctor go to the club, you hear the sound of the crowd clapping for the singer, but no one seated around them is actually clapping, presumably because they couldn't have filmed the characters talking if the others present were clapping.