The Valley of the Queens is a vast necropolis near the Valley of the Kings concealing some of Egypt's most miraculous tombs and powerful women; now, investigators use cutting-edge tech to explore lost tunnels and uncover the enigmatic secrets behind these ancient pharaohs.

The sprawling capital of Persepolis and the site of the epic battle of Sparta at Thermopylae hold new discoveries waiting to be revealed; experts using cutting-edge forensic archaeology to reveal secrets behind these lost cities of ancient Persia. This is a mashup of S09E01 "Lost City Of Persia" (Persepolis) and S05E06 "Finding Sparta's 300" (Thermopylae).