Black Ops, Secret Societies and Cover-Ups *Marathon* | America's Book of Secrets

Go deep into some of America's most controversial mysteries as this full episode marathon explores covert military operations, one of the nation's most infamous organizations, and enduring theories surrounding hidden history. See more in this marathon from America's Book of Secrets.

Stay up to date on all of your favorite The HISTORY Channel shows at history.com/schedule.

#AmericasBookofSecrets

Subscribe for more from America's Book of Secrets and other great The HISTORY Channel shows:
http://histv.co/SubscribeHistoryYT

Watch more America's Book of Secrets on YouTube in this playlist:
https://www.youtube.com/playli....st?list=PLob1mZcVWOa

Check out exclusive The HISTORY Channel content:
History Newsletter - https://histv.co/newsletter
Website - https://histv.co/History
Facebook - https://histv.co/Facebook
Twitter - https://histv.co/Twitter

HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.