What else can we uncover from ancient sites? Are there hidden meanings or revelations we can bring to the surface that can change our understanding on how certain people lived, thrived...or disappeared? Who were the ancient civilization in Peru that built incredible structures at the time of the Pyramids of Egypt, and why do we know nothing about them? And what was the famous megalithic Stonehenge really built for: an astronomical device or sound influencing ritual mechanism?

World War II was the largest and deadliest conflict in human history. From 1939 until 1945, more than fifty nations engaged in harrowing combat, and while the Axis Powers were eventually defeated, plenty of mysteries emerged from the rubble. For instance, is there an armored train filled with Nazi gold deep in the tunnels of a Polish castle? And how did one man survive not just one atomic bombing, but two? Is it possible that a strange presence roams the area of the deadly surprise attack on Pearl Harbor?