Goofs

When Reggie and Joshua arrive at the stamp market, workers on ladders can be seen starting to put a new cover on the completely roofless Berkeley Café in the background. However, a few minutes later, when Grant runs to catch a cab, the building is directly behind him, and the new roof is long since complete.

During the funeral service for Charles Lampert, the position of his fingers crossed on his chest changes between when Leopold views the body and when Tex views the body.

When Mrs. Lampert meets Mr. Bartholemew at the American Embassy, the cups that wine is poured into appear and disappear and change positions throughout the scene.

When Jean-Louis' mother steers him away from Mrs. Lampert and Peter Joshua his hair is on his forehead, but when he turns to spray Peter Joshua with the water gun his hair is tucked into his beanie.

When Alex and Reggie are on the restaurant boat, a man appears and disappears behind them between shots.

The sign outside the embassy would not read "American Embassy." It would read "Embassy of the United States of America" or "Ambassade des États-Unis d'Amérique."

The rare stamps are said to be valued at $250,000, but wouldn't that have only been in their condition prior to being affixed (glued) to a modern envelope? One could surmise their value was reduced due to their altered state.

Charles' body, thrown from a fast-moving train, could not possibly have fallen straight away from the camera in the opening scene.

When the valuable stamps are shown in closeup by the stamp dealer, although the stamps are from different countries, they are affixed to the same, or part of the same, envelope. It doesn't make sense that stamps of different countries would be found this way.

It might make sense to the collector either due to their preference or their desire to hide/camouflage the stamps. Regardless, this is an "Unacceptable Goof" per IMDb Guidelines: "Artistic license: Please allow for artistic license on the part of the film makers. Most movies and TV shows are not meant to perfectly reflect reality as you experience it."

During the Seine cruise, the rear projection plates are repeated. The boat passes the same building, the Institut de France, twice - once when Reggie and Joshua are standing and yet again later when they are seated.

The real Bartholomew tells his secretary to call the police in response to Reggie's phone call. The police never show up.

Reggie, Joshua, and Bartholomew could not have gotten into the theatre so easily when all theatre exit doors are padlocked from the inside.

Bartholomew spent 10 months in a POW camp with untreated bullet wounds in his legs, yet he runs and moves around as well as any average middle-aged man. He even does knee bends while talking to Reggie on the phone.

When Bartholmew questions Regina in the embassy office, he opens a wine bottle with a corkscrew. As he pulls out the corkscrew there is a loud "pop", but there is no cork on the corkscrew.

At the start, an electric train speeds past the camera before the body is thrown from it. The soundtrack gives us the hoot from a steam train.

When Joshua and Scobie are fighting on the rooftop, the supposed brick wall and doorway move when Scobie lands against them.

When Reggie and Peter are walking by the river and he takes the ice cream from her, as he turns around, the inside of his jacket is briefly visible where there is a thin black wire.

Regina, fleeing Canfield, rides the Metro from Saint Jacques (signs prominently seen) to Palais Royal (mentioned several times in dialog). From Saint Jacques one cannot get anywhere near Palais Royal without changing trains at least once; but of course she never does (because Canfield would have another chance to catch her).

When Reggie enters her hotel room, it's pitch black, but Scobie is supposed to have just been ransacking the room looking for the money.

Cruikshank's explanation that Bartholomew had access to the real Bartholomew's office because it was lunchtime is beyond lame. It doesn't explain how Bartholomew knew when lunchtime was and how he bypassed the embassy's security undetected.

At the embassy, Bartholomew tells Reggie that Tex, Scobie, and Gideon are after the money from the auction, which none of them could have known about.

When Mrs Lampert (Audrey Hepburn) meets with the French police detective he tells her that her husband sold the contents of their apartment at auction for $250,000. When she first visits the American Embassy, she is told by "Bartholemew" (Walter Matthau) that the three men who were after her husband wanted the $250,000 her late husband received from the auction.

Bartholomew then tells Mrs Lampert that her husband had stolen $250,000 from the United States government and the government wanted it back. It is later revealed that the men pursing her were part of the theft of the $250,000 from the government and were after her for THAT money, not the money from the auction which they could not have known about.

As Reggie and Sylvie are walking around the indoor swimming pool, the boom mic and boom arm are reflected in the glass as they turn the corner.

In the opening scenes when Mrs. Lampert is being shot in the face by the water pistol, the hand holding the pistol is obviously an adult and not a little boy.

Scobie is covering "Dyle" with a gun held in his artificial hand/claw, but it wouldn't be threatening as there's no way he would be able to pull the trigger.

When Regina and Alexander are standing by the Seine, just below Notre Dame, she pronounces it "Notre Dame", as an American would, instead of "Notre Dahm". For a person who is a simultaneous translator from French to English, it is a funny mistake to make, especially as Audrey Hepburn spoke fluent French, as she did in the rest of the movie.

When Tex places a mirror under the nose of the dead Lampert to see if he's still alive, he does so for only a fraction of a second; this is not enough time to catch someone breathing.

When Regina is taken to the morgue to identify her husband's body, the coroner's hands are visible as the body drawer is closed. The coroner's fingers would have prevented the drawer from closing or else his fingers would have been injured.