"Les Maîtres Fous" is a 1955 documentary film directed by Jean Rouch. It explores the Hausa people of Niger and their unique religious rituals. The film captures a trance ceremony where participants embody spirits, showcasing the intersection of culture, religion, and social dynamics. The documentary is notable for its innovative style, blending ethnographic observation with cinematic techniques. It challenges traditional representations of African cultures and emphasizes the importance of understanding local beliefs and practices. "Les Maîtres Fous" remains a significant work in the field of anthropology and film studies.