Trapper John, M.D. (1979)

S1E14 Missionary's Downfall

Title: The Healer's Folly Plot: A man who once beat terminal cancer through his own holistic methods has penned a book to share his journey and attract followers. He persuades a woman suffering from lupus to abandon her medical treatments, pushing her to the brink of death. It isn't until he witnesses her declining health that he finally acknowledges his limitations and realizes she requires professional assistance he cannot provide.