America's Book of Secrets is a documentary series about mysterious or little known aspects of U.S. history, theories about secrets that are possibly being hidden from the public, and hidden sources of the social issues that face the country. Episodes deal with topics such as government coverups, organized crime gangs, the War on Drugs, white supremacy movements, cults, presidential assassinations and coup attempts, terrorist attacks, extraterrestrials, Bigfoot, government surveillance, covert military operations, secret societies and American oligarchs.