Continuity mistake: When Annie and Laurie leave the hardware store to go to their babysitting jobs it is broad daylight. When they reach the houses apparently just a few blocks away, it is already dark.
Continuity mistake: In the scene where Bette Davis has lost her shawl there is a shot of her and Maggie Smith from far away. They talk about the time and in the background Angela Lansbury is drinking. She puts down her glass and leans her head on her hand. Then the shot changes to a close-up of Bette Davis and Maggie Smith and you can see Angela Lansbury in the background, with the glass in her hand, just about to take a drink. (00:55:05)
Continuity mistake: Spoiler: At the end of the film, Faye Dunaway shoots Tommy Lee Jones. He falls to the floor dead. The positions of his coat and tie change between shots.
Continuity mistake: When the taxi driver sets off in pursuit of the white truck, only the driver is seen at the wheel and Robert Mitchum is not sitting in the back. In the next shot of the taxi, Robert is seen in the back of the taxi.
Continuity mistake: Marsha Mason is standing between Abe Vigoda and Vic Tayback.After a quick close-up of Peter Falk suddenly she is standing next to Peter.
Continuity mistake: Though Fausto Zoppi and Jean-Claude Moleno are to have contributed to the 'World's Most Fabulous Meal' for the Queen, neither of them ever shows up in the kitchen during the preparation of the dinner. They don't even appear until much later in the film.
Continuity mistake: It is easy to see Ace Frehley was wearing black leather shirt/pants at the beginning of the film. When they are fighting the robots next to the Rollercoaster, his suit is white leather.
Continuity mistake: When Matthew goes to rescue Elizabeth from her boyfriend he parks on the street. When they leave he is parked in the driveway.
Continuity mistake: As the Prussian agents escape by carriage with Hannay after 'springing' him from police custody, you can see modern markings on the road for a car parking space.