Tony Ryder's uncle, the wealthy publisher of magazines, has just died. The young playboy Tony inherits the paper but is left with a board of directors that thinks he's unsuited for the task, plus a hotel detective who thinks Tony should know about a girl who was seen running away from his uncle's Palm Beach hotel room, wearing nothing but a Turkish towel and an earring, on the night of his death.
Tony discovers that the young lady in question, Katie Robbins, is employed in his own research department. The board decrees that he must send in the detective to watch her and head off any attempts at blackmail. But the more time Tony spends trying to get Katie to open up about what her relationship to his uncle was, the less he cares. Complications ensue in the form of Ms. Robbins's fiancé—he's a strait-laced veterinarian—and the board's insistence that Katie be silenced at all costs.
Tony goes as far as kidnapping a dog off the street, so he can gain access to Kingsley's veterinary clinic and size him up. When the dog's muscular owner appears, Tony beats a hasty retreat and leaves Kingsley to take the heat.
When Kingsley's strait-laced parents come to New York to meet Katie, they quickly discover her inability to cook and her low tolerance for alcohol. The father, somewhat henpecked, secretly enjoys a grand tour of Manhattan's nightspots.
Kingsley Jr. is exposed as an unworthy "Mamma's Boy", and Tony demonstrates his loyalty by proposing to Katie in a crowded elevator of strangers.
^"Feature Castings". The Hollywood Reporter. May 27, 1960. p. 9. ProQuest2338237308. Rosemarie Bowe, 'All in a Night's Work,' Paramount.
^ abcdefg"Feature Castings". The Hollywood Reporter. May 26, 1960. p. 9. ProQuest2339737187. Johnstone White, Donald Foster, Carlyle H. Mitchell, Mike Mahoney, Michael P. Moll, Florence Ravenel, Cecil Elliott, Richard Wessel, Carle Saxe, 'All in a Night's Work,' Paramount.
^ ab"Feature Castings". The Hollywood Reporter. May 2, 1960. p. 9. ProQuest2338366005. Virginia Whitmire and Jay Girard, 'All in a Night's Work,' Hal Wallis-Paramount.
