"Sadie Thompson" is a fictional character from the short story "Rain," written by W. Somerset Maugham. She is an American woman who travels to the South Seas, seeking refuge from her troubled past. Sadie is portrayed as a free-spirited and independent individual, living life on her own terms. The story explores themes of morality, judgment, and the clash between different cultures. Sadie's interactions with Reverend Davidson, a missionary, highlight the tension between her desire for freedom and his strict moral beliefs. This conflict ultimately leads to a dramatic confrontation that shapes the narrative's outcome.