Goofs

When Janet returns to Lawrence's villa, Arthur closes the doors after she entered the room. In the next cut, Janet is sitting and the doors are wide open.

When Lawrence, Benson and Janet arrive at the villa for the first time, it is night but when Lawrence takes Janet to the music room to dance, sunlight is streaming through the window.

Before the scene in the dining car there is a shot of a Swiss railway train (the initials SBB CFF FFS can clearly be seen). It is implied, however, that this is the same train as the one arriving at "Beaumont sur Mer" which has the SNFC (French railways) logo on its locomotive.

In the roulette scene, the ball lands on 26 but the croupier calls 22 (vingt-deux).

When Lawrence and Freddy first see Janet Colgate, it is when she has entered the hotel and fallen on the floor. She lifts her head and her hair is dark under her red hat, but in the next scene at the casino, it is almost blonde.

When Lawrence Jamison goes to Switzerland, the sign in the train station reads "ZURICH". It should read "ZÜRICH" with an umlaut.

The Danish registered Ferrari that is driven by "Mrs. Christa Knudsen" has a license plate that looks Danish. The license plate, however, would begin with the letter "M" or "N" instead of "A". In Denmark "A" was used in the 60s and "K", "L", "M", and "N" in the mid-eighties.

TWA never flew passengers from Europe to USA on Boeing 727 aircraft, as depicted in the film..

They did, however, fly that model within Europe around the time this movie was made.

Freddy passes himself off as a paralyzed naval officer but is wearing the blue dress uniform of a US Army enlisted man with the rank of corporal. The sailors that help Freddy would have picked up on that.

The two sailors are not American, so it is possible that they are not familiar with the uniforms of foreign services.

Freddy's phony dress uniform has both the Good Conduct Medal and the ribbon for the same award. In the US Army, one wears either ribbons or full medals, but never both.

However, this cannot be regarded as an error as the con-man is only trying to deceive his victim and is not military-versed.

When taking a phone call from the pool, Lawrence is wearing a copper colored bracelet that fits partway around his wrist. His wrist is smudged with gray above the bracelet, most likely from the bracelet coming in contact with the water and rubbing off on his skin.

However, this cannot be regarded as an error as this type of copper bracelet wear was fashionable in the 80s and 90s and supposedly "healthy jewelry".

The movie is set in the French Riviera, yet the bet is for $50,000 US. Why is it not in francs? Also, the fictional Dr. Emil Shoefhausen's clinic is in Lichtenstein, and his fee happens to be $50,000 US, not something in Swiss francs. And Freddy asks Janet to ask the croupier if he can be advanced a few dollars instead of francs for his medal at the casino, where Lawrence also picks up his winnings in francs.

US dollars are a reference currency, and considered to be a strong and valuable currency that is accepted in most countries around the world. It is not unusual for high-priced transactions and fees to be conducted in US dollars.

Janet tells the tourists that she'll "...be right up there.", and then she turns around to talk to Freddy and Lawrence. Her accent changes from New York to Mid-Western American in-between scenes.

This is because she is a con artist playing a role; she talks to the marks in her fake New York accent, then talks to Freddy and Lawrence in her own natural accent.

The supposedly French police inspector speaks his native language with a strong foreign accent. Indeed, actor Anton Rodgers is English.

On several occasions, the noise produced by the characters pushed in the plants is very loud but then completely quiet when they are talking despite continuing moving those same plants while moving, revealing an obvious dubbed sound.

When Lawrence supposedly heads to Zurich, the image that is shown is of the Pont du Mont-Blanc in Geneva.

There is no train station in Portofino.

When Janet first arrives at the hotel, a baggage handler carries her suitcase to the check-in desk. The suitcase he carries has a luggage tag on it with the letters LAX, not a European city.

When Janet and Freddy are kissing in the guest room near the end of the film, a boom mic is reflected in the mirror behind them as they move towards the bed.

Upon seeing the dancers, when Freddy is rushed away in his wheelchair by Janet, the reflection of the boom operator chasing after them can be seen in the mirror on the wall that they are running along.

When Lawrence sits down at the roulette table at the start of the film, his mark puts down orange markers and mauve chips on the table. Lawrence then puts down mauve chips on the same number. But when playing roulette, each player has different colored chips to ensure there is no confusion as to whom has won and whom has lost.