The Blue Angel (1930)

In 1920s Germany, a stern professor, disturbed by his students' fascination with a provocative cabaret singer, visits the venue to confront them. Instead, he finds himself mesmerized by the singer's allure, leading him into a whirlwind romance that disrupts his once-stable life. As he marries the woman whose career thrives on seduction, he becomes increasingly enmeshed in a dark, degrading descent.