When Cahiers du Cin?ma requested statements from a selection of auteur filmmakers from around the world for inclusion in the magazine, Howard Hawks simply sent a production still from Man's Favorite Sport of Rock Hudson up to his neck in the lake with no explanation.

Cary Grant turned down the lead role because he was 58 and the leading lady Paula Prentiss was only 24.

Last film of Roscoe Karns.

Hawks wanted so much to have Paula Prentiss as his leading lady that he even considered to move the production to M-G-M, where she was under contract.

Filming began late in 1962 but the movie was not released until 1964.

Continuity

When Roger visits Abigail at her camp her air bed is supported on a frame that holds it about 8 inches off the ground. Later, during the rainstorm, the bed is flat on the ground so it can be washed into the lake.



Incorrectly regarded as goofs

John McGiver's character William Cadwalader mentions his wife makes him wear a hair piece, but he is not wearing a wedding ring. Many men, particularly those of older generations, did not wear wedding rings in the 1960s.



Revealing mistakes

Just after helping Easy gracefully exit the lodge due to her inadvertently unzipped dress, Roger attempts re-zip the back of Easy's dress. Just prior to the moment Easy turns her back to hide Roger's hands from view, it is obvious that Roger grasps the end of his tie to attach it to the zipper.



Character error

When Abigail cuts the cast off Roger's arm with the circular saw, she is holding and running the saw backwards.