The Strange Case of Dr. Meade (1938)

Doctor Meade (Jack Holt), a New York City doctor, while taking a vacation in the mountain country of Kentucky, comes across Doctor Hazard (Paul Everton) and his nurse Bonnie (Beverly Roberts) who substitute herbs and folklore for medicine. When a typhoid epidemic is shrugged off by Hazard as a mere summer ailment. Meade then takes on the task of overcoming superstition, opposition, ignorance and herbal remedies , in order to save many lives. And nearly gets lynched in the process.