Actress Carol Adams retires from the theater when she becomes engaged to businessman Gregory Davis, but is increasingly frustrated by Greg's unwavering devotion to his business. Tired of being ignored, Carol leaves her engagement ring with Greg's secretary, Sarah Anderson, and flies to Mexico City to repair her broken heart and visit her friends, Anita and Arturo Martinez. On the plane, Carol meets Ramon Carranza, a handsome singer and movie star who is wildly popular in Mexico.

A playboy produces an airtight alibi when he is questioned about the murder of his wealthy aunt.

An aspiring playwright gets a job in a New York City restaurant favored by celebrities in hopes of getting a break. Unfortunately, most of them believe that the waiter lacks the talent to make it big. Only an aspiring songwriter, and a former waitress who has become a famous Hollywood radio star, really believe in him. When the ex-waitress drops by the restaurant to say hello, she and the others decide to play a trick on an arrogant producer by making him believe the waiter has written a sure-fire hit. They succeed and the producer puts on the show. The singer gets to be the star. When the show becomes a smash, everyone is surprised. Songs include: "Hitchhike To Happiness," "For You And Me," "Sentimental," and "My Pushover Heart."

Broadway producer Earl Carroll was a Ziegfeld-like entrepreneur who staged lavish revues featuring attractive young ladies. Carroll's annual "Vanities" provided story material for three Hollywood films: Murder at the Vanities (34), A Night at Earl Carroll's (40) and Earl Carroll Vanities (45). This last film was produced by Republic Pictures, a bread-and-butter studio specializing in Westerns and serials; Republic had made musicals before, but few of them were expensive enough to allow for lavish production numbers. Earl Carroll Vanities is likewise rather threadbare, though some of the individual musical highlights aren't bad. The plot, such as it is, concerns financially strapped nightclub owner Eve Arden, who finagles Earl Carroll into staging one of his revues at her club.

In the 1840s, Ramsey MacKay, the driver for the struggling Wells Fargo mail and freight company, will secure an important contract if he delivers fresh oysters to Buffalo from New York City. When he rescues Justine Pryor and her mother, who are stranded in a broken wagon on his route, he doesn't let them slow him down and gives the ladies an exhilirating ride into Buffalo. He arrives in time to obtain the contract and is then sent by company president Henry Wells to St. Louis to establish a branch office.

Suspected crime boss Nate Girard beats a murder rap, and newspaper photog Kent Murdock is on the story. Girard and lawyer Redfield throw a party for the news men where Murdock romances a mystery woman who confronted Girard in front of him, but Murdock's fiancée Hester shows up. After they return to his apartment, have a fight, and she leaves, the mystery woman slips in and begs for his help. Police Inspector Bacon and the cops show up, looking for the mystery woman; Murdock hides her. Murdock goes with the cops to discuss the murder the woman is suspected of. Bacon explains (in flashback) how some photogs were setting up a shot with Girard and Redfield. When the flashbulbs popped, Redfield keeled over dead and the woman, Meg Archer, fled while the newsmen ran out to phone their papers. The newsmen (who were rounded up later as thoroly as possible) are taken into police custody, except for Murdock (who wasn't at the scene), who is given a cap on the sly by rival McGoogin. Altho ...