The word "muir" means "sea" in Scots Gaelic. Many times sailors are said to have been "married" to the sea, or that the only woman they ever loved was the sea.
Gene Tierney's first approach to the character of Lucy Muir was playful, almost screwball. After a conference between Twentieth Century Fox studio head Darryl F. Zanuck and director Joseph L. Mankiewicz, the first two days of shooting were re-done so that Tierney could give the character more depth. The change resulted in huge critical acclaim for the actress.
Despite being set in London and on the English Coast and having mostly English actors and actresses, this movie was shot entirely in California and along the central Pacific coastline.
The address given to Lucy Muir as the home of Miles Fairley ,14 Albemarle Street in London, is a real place. This is the door to walk-up apartments, and is next to a Tiffany & Co. shop.