ObscureHollywood.net’s review published on Letterboxd :
Three years wed, Janis Page and Don DeFore do not trust each other. After DeFore tells Paige that he is unable to cruise with her to South America, she hires Doris Day to go under Paige’s name. Paige plans to remain behind and spy on DeFore and catch him with other women. Meanwhile, DeFore, not trusting Paige, hires private detective Jack Carson to follow his wife and report her conduct on the cruise ship. On board, Carson and Day are soon falling in love. Although Carson feels guilty betraying his client and Day wants to protect Paige’s reputation. Pledged to secrecy, neither can tell the other one the truth.
This sprightly romantic comedy was directed by Michael Curtiz, who directed many notable films such as The Sea Hawk (1940), Yankee Doodle Dandy (1942), Casablanca (1942), and Mildred Pierce (1945). In her first film Doris Day is billed fourth, but she is the star of the picture, nonetheless. Jack Carson, a fine comedian but not a conventional leading man, pairs well with Day.