In her autobiography, Doris Day wrote: "Of all the people I performed with, I got to know Cary Grant least of all. He is a completely private person, totally reserved, and there is no way into him. Our relationship on That Touch of Mink (1962) was amicable but devoid of give-and-take...Not that he wasn't friendly and polite - he certainly was. But distant. Very distant. But very professional - maybe the most professional, exacting actor I ever worked with. In the scenes we played, he concerned himself with every little detail: clothes, sets, production values, the works. Cary even got involved in helping to choose the kind of mink I was slated to wear in the film."

Cary Grant was a big fan of The Honeymooners (1955) and Audrey Meadows in particular, and was responsible for getting her the part of Connie.

When Cary Grant noticed an ad for a raincoat that he thought would be appropriate for Doris Day to wear in the picture, he called the owner of the company who made it. After explaining who he was and what he wanted the coat for, he was given the brush-off by the manufacturer, Norman Zeiler, who later recalled that he didn't believe it was Grant. "So I told him if he wanted to see our collection, he'd have to come up himself. And he did." The much-imitated Grant, who usually made all his own calls and answered his home phone himself, often had that problem. People just couldn't believe it was really Cary Grant they were talking to.

As with almost every film he made once he became an established star, Cary Grant had a clause in his contract insisting that, after an agreed upon period of time passed, all rights to the movie's negative went from Universal Pictures (which originally released it in 1962) to control by Grant's production company. Those rights eventually reverted to Grant's estate, and are still earning royalties for Cary Grant's heirs.

Shayne discounts the New York Yankees, joking that they "try hard." Ironically, the movie was filmed in 1961 - the year the Yankees would win the World Series in five games, and Roger Maris broke Babe Ruth's home run record. As this film was released the following year, the audience was delighted.

Continuity

When Cathy and Connie are going to sleep after Cathy's first day with Mr. Shayne, Connie places the card from the unwed mothers' home next to the clock, but when Cathy wakes up at 2:30 a.m., the card is next to the phone.

The take-off and landing shots depict a Pan Am Boeing 707, but the inflight shots are of a Pan Am Douglas DC-8. Both were operated by the airline at the time, but were built by competing manufacturers.

The aircraft Cathy is depicted as leaving New York in is not the same one shown landing in Bermuda. Both are Pan Am 707s, but the one leaving New York, named "Clipper Tradewind" has registration N709PA. The one landing in Bermuda has registration N729PA.

When Roger falls down the stairs at Cathy's apartment building, the stuntman's final positions on the landings after falling are different from the positions from which Gig Young stands up.



Factual errors

When Philip and Cathy are driving up to the hotel in Bermuda, he is driving: on the right side of the road - in Bermuda, one drives on the left and the car is a left-hand drive. While Bermuda doesn't have car rentals and only residents are allowed to own cars, it can be assumed that Shayne has the means of borrowing a car from a friend there.

Conversations at the Automat between customer Cathy and worker Connie could not have occurred as shown. Automat compartments were refilled by means of a revolving drum that made it impossible for a customer to make contact with anyone working behind the wall.

When Shayne address the U.N. General Assembly, he is speaking from the United States' seat. It is shown between the United Kingdom and Venezuela. Later, the U.S.S.R. representative is shown applauding. The United States should be sitting in between the U.S.S.R. and the United Kingdom.

Shayne says "there is no television" in Bermuda. In fact, ZBM-TV began broadcasting in 1958, becoming a CBS affiliate in 1960. Before that, people living near Kindley Air Force Base could pick up broadcasts from there.

In the American Credit Card Univac room, a customer record (card) was reviewed. The card was a Hollerith (IBM) card, not a Powers card (Univac).



Revealing mistakes

When Shayne and Roger are talking in the office, Shayne is drinking from a teacup. The camera angle is from behind Shayne's right shoulder, and, as he raises the cup, it can be seen that the cup is empty.

The final scene in the park is shot against a rear projection. It's so obvious, you can see a blue boundary/halo around each actor.

Assuming she tumbled over the balcony head-first, Cathy should have landed on the canopy face-up, not face-down, with her feet pointed toward the street, not toward the hotel.

The bottle on Cathy's big toe is plastic, as evidenced by the way it flops around when she wiggles the toe. Were the bottle glass, gravity would pull it and the toe down, making it very hard for her to move either.



Miscellaneous

When Roger calls his psychiatrist from his office none of the buttons on the phone are lit.



Boom mic visible

When Philip gets out of the back of the chicken truck, the boom is visible on the door.



Character error

Shayne books an entire jumbo jet to fly Cathy to Bermuda--an unnecessary expense, as it's already been established he owns a private jet.