When the hitchhiker pulls off her wig and pretends to be a man, her voice changes to that of a man's voice and is clearly a totally different voice, not just a disguised voice, and the lip movements do not match the words further proving that the man's voice is being dubbed.
When Clouseau and Cato are trying to get into "Le Club Foot" they go crashing through the window of a bakery. A little later on, they go through the same hole again, yet this time there is a large undamaged wedding cake sitting there for Cato to land in; the cake couldn't have survived the first accident.
After Claude Russo steals Clouseau's clothes and Cato's car at gunpoint, he is later shot by Douvier's men and crashes into a tree. However, the following day, a news announcer states that Clouseau (Russo) was dead before his car hit a telephone pole.
When Dreyfus and the commissioner are discussing Clouseau's supposed death, Dreyfus is holding open a pink file and there is a white folder on the desk . The shot switches to Dreyfus standing up; the pink file he is holding is now closed and another pink file is on top of the white folder on the desk.
When Douvier asks Simone to 'come in here for a moment' there is a lamp, bust and two golden animals on his desk. Simone enters and there is a different shot of his desk - those three items are now in completely different places relative to each other.
When Simone is rescued outside Club Foote she hits one of her abductors in the head with a brick, which she then drops from her hand onto herself, but she does not wince, which one would if a brick of that size drops on your lap - clearly indicating it is a fake brick.
During the car chase scene on the way to the Lee Key boatyard as the large Mercedes limousine and Ford Cortina police car approach the camera, both vehicles can be seen tethered to each other just as the scene finishes.
Clouseau himself obviously lights the paper on fire in the Chief's office. Just before being handed the paper, his left hand, which is away from the camera on the other side of his body, appears to dip into his left trouser pocket. Then when he is handed the paper, he has to turn it around so that a particular side is facing him, but he does it awkwardly with only his right hand, with the paper still laying on the table, using two spinning movements with his right hand to turn the paper and keeping his left hand hidden (the natural response is to hold it with both hands while turning it). Keeping the left hand hidden from view is awkward and shows that he is hiding something in it. And since the camera is too far away to show any writing on the paper, the only reason for turning it is because it is likely a piece of paper with one edge containing a flammable material to make it easier to light, and he has to turn it so that his hidden hand holding the lighter can light that edge without being seen. Then when the paper catches on fire (and it does so rapidly, and it spreads very fast, while a normal piece of paper would catch fire much more slowly and not spread so quickly, proving that the one edge of the paper clearly contained a flammable substance - in addition, a piece of paper normally wouldn't burn without holding it vertical so that the flame spreads upwards, but this piece of paper is held horizontal while the flames spread quickly, further proof of a flammable substance being added to the paper's edge), the part of his left arm that is visible clearly moves in a way to reveal that he is lighting the paper, probably with a lighter. Immediately after lighting it, the movement of his left arm betrays him pocketing the lighter.