Behold a Pale Horse is a controversial book by William Cooper that explores a variety of conspiracy theories, including those related to the government, extraterrestrial encounters, and secret societies. Drawing on his background as a former naval intelligence officer, Cooper delves into a range of subjects, offering his interpretation of events and the hidden forces that shape world affairs. The book has been influential in the world of conspiracy theorists and is seen as a significant work for those interested in alternative narratives about power and control in society.