The Firefly (1937)

As the Napoleonic Wars loom, Spain's secret weapon is the mesmerizing siren, Nina Maria Azara. With her enchanting voice and irresistible allure, she doubles as a spy, tasked with the seduction of French Officers to uncover Napoleon's secretive designs on Spain. Amidst the glamour of a club performance, she crosses paths with the mysterious Don Diego, completely oblivious to his true identity as Captain Andre, a French spy assigned to keep tabs on her. Her mission takes her to the heart of danger in Bayonne, France, where she must delve into the shadowy world of military secrets. As the intricate dance of espionage unfolds, Nina discovers Diego's true identity, but it's too late, Cupid's arrow has already struck and she finds herself falling for her would-be adversary. In a thrilling turn, Nina outsmarts her potential captors, darting back to the safety of Spain, only to disappear into the shadows. However, the relentless march of Napoleon's troops sees Spain falling under their might, resulting in Nina's capture. Amidst the chaos of war, destiny interweaves the threads of their lives once more as Nina and Captain Andre find themselves face to face. But with their nations locked in a fierce combat, their reunion promises to be anything but peaceful...

The Firefly is a drama movie featuring Jeanette MacDonald.

It is possible to buy The Firefly on Amazon Video, Apple TV, Google Play Movies, Vudu and YouTube.