New Girls: Redheads

An American army officer working for British intelligence comes to post-war Berlin to solve a murder. His investigation is compromised when he falls for a nightclub singer, not realising she is an agent of the criminal mastermind he is on the trail of.

Let's Get Married is a 1937 American comedy film starring Ida Lupino, who plays the daughter of a political consultant, Joe Quinn. From Wikipedia

Socialite Cathy Abbott is working in the chorus of a Broadway show instead of being enrolled at an exclusive girl's school as her parents think. When the show closes, she brings two of her chorus friends home with her. In addition to trying to make her friends acceptable to the snooty society of which her family is part, she is also being blackmailed by a rival.

Kleptomaniac Dorothy Lyons is paroled from prison into the custody of her sister June, secretary to "reform" politician Frank Jansen. Ben Grace, associate of crime boss Sol "Solly" Caspar, sees this as a way to smear Jansen's campaign. Seductive Dorothy will do anything to get what she wants, which includes having a good time with Ben- whom June is now in love with.

Lupe Vélez plays a dual role, twin sisters Rita and Elaine. After escaping a torpedoed ship, Rita shows up in Manhattan, where she takes the place of her Broadway-star twin sister Elaine, who's having problems with her marriage and needs to make a getaway. Neither Elaine's husband or Rita's saxophone-player boyfriend are aware of the switch.

In order to land an important client, Morgan is obliged to escort a beautiful redhead to a costume ball. Finding out about this, and suspecting that some hanky-panky is involved, Morgan's wife Angela dons a mask and a red wig and offers herself as the companion of her unwitting hubby. Angela's jealousy-motivated subterfuge works to everyone's advantage when she manages to cinch the deal for Morgan.

A small-town politician falls for an idealistic zookeeper.

Lil works for the Legendre Company and causes Bill to divorce Irene and marry her. She has an affair with businessman Gaerste and uses him to force society to pay attention to her.

A saloonkeeper sides with the sheriff for justice after she's framed for rustling.

A random encounter with a lost beauty leads a dashing Driver to a party where he meets a duo of alluring friends. Little does he know that their seductive game holds a shocking twist, as their night together takes a thrilling and life-altering turn. "Dinner is Served" is a satirical short film that combines elements of horror, thriller, action, and dark comedy to explore the susceptibilities of men to female manipulation. Through a playful twist on stereotypes, the film probes the moral boundaries molded by established social norms, including an often-exaggerated ethos of veganism.

Rowdy young girl crashes high society when wealthy older man falls for her.