Season 5 - Episode Guide

New discoveries at Pompeii and Herculaneum reveal the identities and final moments of those trapped during the eruption of Mount Vesuvius volcano 2,000 years ago.

A new discovery in the Baltic Sea reveals the story of this lost treasure. The wreckage of the German World War II steamer Karlsruhe may contain the Amber Room. During Operation Hannibal's evacuation (Germany's Dunkirk), Soviet planes bombed and sunk the ship in April 1945.

The wrecks of ships, subs, and planes reveal the secrets of Pearl Harbor. Draining Hawaii discloses Japan's secret weapons, like the midget submarine sunk by the USS Ward and the Zero that crashed on the Hawaiian island of Niʻihau. The wreck of the USS Arizona serves as a reminder of the forces unleashed.

Archaeologists on land and sea reveal secrets of the infamous Alamo siege. They research the events surrounding the Battle of the Alamo in San Antonio, Texas, one of the most famous sieges in American history. Shipwrecks found in the Gulf of Mexico filled with weapons and new research on the Battle of San Jacinto reveal secrets of the Alamo and tell how Texas, against all odds, secured its independence.

Maya Collapse: New discoveries made at the capital city of the lost kingdom of Sak Tz'i (or White Dog) and a tale of human sacrifice deep within an underwater cave (or cenote) offer new insight into the rise and fall of the ancient Maya.

Drug smuggling routes make cartels billions of dollars each year. A mysterious plane wreck in the Caribbean at Norman's Cay, The Bahamas, and secret tunnels along America's border with Mexico reveal the scale of an unrelenting war. With real-time access to a US border security team, discover the extraordinary story of how Mexican cartels smuggled cocaine into the US over the last 40 years.