The excavation team makes use of Soviet military reports to locate the front-line trenches of fierce conflict between Allied and Nazi forces in Latvia's Courland peninsula. As they progress along the front, the experts uncover a live shell that must be detonated under controlled conditions by an army bomb disposal squad, and also find the bodies of fallen German and Russian soldiers. Last in the series.

A search for a mass grave in western Poland yields an unexpected discovery that raises questions about a turning point in the war.

In western Latvia, the team sets out to uncover new clues to the 1944 showdown between Hitler's SS Nordland division and Stalin's Red Army.

The team heads to Latvia to search for an abandoned German artillery bunker that may contain a trove of historic items.