Quick answer · Season 4

America's Book of Secrets is a mystery and documentary series that aired on History, running from 2012 to 2021 with 4 seasons and 42 episodes. America's Book of Secrets has ended. Its final episode aired on July 20, 2021.

U.S. premiere: May 11, 2021
Where: Cable
Time: Varies by station
Episodes: 10
Finale: July 20, 2021

Where to watch America's Book of Secrets season 4 in the U.S.

Where to watch America's Book of Secrets season 4 in the U.S.
Where	How	When	Notes
Cable	Broadcast (free)Antenna / cable	May 11, 2021 – July 20, 2021	Original U.S. run on History. [1]

Season 4 episode schedule

America's Book of Secrets season 4 U.S. episode schedule
Ep.	Title	U.S. date	Time	Status
1	The Secret Space Program	Tue, May 11, 2021 ^[1]	Check local listings national slot	Listed
2	Protecting the President	Tue, May 18, 2021 ^[1]	Check local listings national slot	Listed
3	The Freemason Factor	Tue, May 25, 2021 ^[1]	Check local listings national slot	Listed
4	FBI vs. MLK	Tue, Jun 8, 2021 ^[1]	Check local listings national slot	Listed
5	The Hunt for Hitler's Relics	Tue, Jun 15, 2021 ^[1]	Check local listings national slot	Listed
6	Inside Area 51	Tue, Jun 22, 2021 ^[1]	Check local listings national slot	Listed
7	Doomsday Scenarios	Tue, Jun 29, 2021 ^[1]	Check local listings national slot	Listed
8	Mind Control	Tue, Jul 6, 2021 ^[1]	Check local listings national slot	Listed
9	Alien Disclosures	Tue, Jul 13, 2021 ^[1]	Check local listings national slot	Listed
10	Deadly Pandemics	Tue, Jul 20, 2021 ^[1]	Check local listings national slot	Listed

Dates are U.S. dates. Broadcast times are the network's national slot; your local station may differ.

About America's Book of Secrets

Season 4: Season 4 of America's Book of Secrets aired from May 11, 2021 to July 20, 2021 on History (10 episodes).

Network / service: History (first aired January 15, 2012)
Official site: history.com
Main cast over the series (TVmaze): Jonathan Adams (Narrator), Lance Reddick (Host)

All seasons

Season 4

Season complete

Season 4 of America's Book of Secrets aired from May 11, 2021 to July 20, 2021 on History (10 episodes).

Cable

Season 3

Season complete

Season 3 of America's Book of Secrets aired from March 29, 2014 to May 31, 2014 on History (10 episodes).

Cable

Season 2

Season complete

Season 2 of America's Book of Secrets aired from April 5, 2013 to June 21, 2013 on History (12 episodes).

Cable

Season 1

Season complete

Season 1 of America's Book of Secrets aired from January 21, 2012 to March 31, 2012 on History (10 episodes).

Cable

Common questions

How many seasons of America's Book of Secrets are there?

America's Book of Secrets has 4 seasons and 42 episodes listed, airing from January 21, 2012 to July 20, 2021.

Is America's Book of Secrets cancelled or ended?

America's Book of Secrets has ended. Its final episode aired on July 20, 2021.

Where can I watch America's Book of Secrets?

America's Book of Secrets originally aired on History in the U.S. Streaming rights for older seasons change over time, so check History's own app and the major streaming services for the current home.