Modern archaeology reveals new insights into the identities and significance of two Viking women buried in the Oseberg mound, in Norway. In China, a 1,300-year-old murder mystery is uncovered within a tomb raider's tunnel, exposing the violent end of a young man and secrets from ancient robbers. Wrangel Island, Russia, yields shocking discoveries about the last woolly mammoths, with scientists examining genetic clues to understand their extinction. Lastly, forgotten remnants from Weather Station Kurt, the only German operation on North American soil during WWII, are unveiled in the sub-Arctic tundra, revealing its hidden history.