American code breakers have given the United States an edge in every conflict in American history. But with uncrackable encryption available for your cell phone and computer, have U.S. code warriors finally met their match?

A secret part of American history has remained hidden, locked away for centuries in the hulls of ships in New York Harbor or in the depths of an abandoned copper mine. These are America's Secret Prisons.

Since ancient times, man has gone to extreme and often deadly lengths to get gold, one the rarest treasures on Earth; looking at where the gold is today and who owns it.

The Vatican protects its reputation and the members of its ranks with fierce abandon. But the scandals throughout its history are some of the darkest in all of history.

A secret society gathers in the dead of night and plots the assassination of President Abraham Lincoln; U.S. spymaster Allan Pinkerton stops Confederate agents before they can topple the Union.

Exploring whether the attack on Pearl Harbor was really a surprise, if FDR knew about the attack beforehand, and who really fired the first shots of the Pacific War.