Revealing mistake: During the fight between Bond and Peter Franks in the elevator, if you watch carefully when Bond hits Franks' wrist with the door while he is holding the glass shard, Franks drop the glass shard before his wrist gets hit a second time.
Revealing mistake: When Mr Wint puts the scorpion down the back of the doctor's shirt while he is looking at Mr Kidd's wisdom teeth, the scorpion is made of plastic and not a real one.
Revealing mistake: When Mrs Whistler's body is being removed from the canal in Amsterdam, it's clear in the long shot that it is just a dummy.
Revealing mistake: When Bond knocks Blofeld unconscious with a lamp in the fight at the start of the film, look carefully and you can see that Blofeld is already knocked out before the lamp comes into contact with his head.
Continuity mistake: In the scene where Bond comes aboard the oil rig, Blofeld says "How disappointing." whilst Tiffany can be seen on a sun lounger in the background. Towards the end of this shot, she raises her right arm to her sunglasses. In the very next shot of her (closer up), she raises her arm again.
Continuity mistake: When we first see Mrs Whistler's body being pulled out of the water, her front is towards the boat. In the next clip, her back is towards the boat.
Continuity mistake: When Plenty offers to help Bond with the game, behind them is a man in a yellow shirt and a man in a brown coat and green shirt. However in the next clip there is a lady in a pink dress instead of the man in the yellow shirt. She was nowhere to be seen half a second earlier.
Continuity mistake: When Blofeld is watching Bond and Plenty in the casino on the surveillance camera, on the screen a man in a dark shirt can be seen on Bond's right side. But in the next clip (and in the preceding clip) a little lady in a white dress is standing on Bond's right side.
Continuity mistake: When Bond first sprays foam on Franks he hits his left shoulder, but in the next clip there is only foam on his head and nothing on his shoulder.
Continuity mistake: Shady Tree is standing over the coffin talking down into it when it opens. However in the next clip he is standing much further away - and lower - and not in a position to look down into it that way.
Continuity mistake: When Frank's is lying dead on the floor he has foam in his hair, but when Bond drags him into the flat, he has foam only on his face and nothing in the hair.
Audio problem: When Bond is driving away from the 'Moon base' his tires are screeching. But the asphalt is very rough - maybe its even gravel - so it couldn't make such a sound.
Continuity mistake: When Bond, in the casino, takes the envelope out of his pocket, he holds it with his right hand, with his fingers close to the upper end of the envelope. However, in the next clip he is holding it much further down and with his fingers in a different position.
Audio problem: When James Bond is collected on the airfield they are all getting into the car. You see how the right door is closed but you never hear it.
Answer: If you mean by hiding - why is he never seen normally - then it's because he is a recluse and doesn't like to be seen in public (like Howard Hughes was). If you mean by hiding - why was he not seen during the movie - then it's because he was being held captive by Blofeld and his minions. Spectre didn't want him out and about ruining their plans.
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