Public Hero #1 (1935)

Cutie (especially when his hair is messed) Chester Morris is Public Hero #1 after he goes undercover to stop the Purple Gang from marauding the country. The exquisite Jean Arthur enters the melee as the sister of the gang's leader and G-man love interest. The movie is very dated but it is interesting how they made the criminal a hero post motion picture code - and, of course, I do love me some Jean Arthur!