Investigating the mysterious collapse of Egypt's old kingdom, Josh completes his Saqqara necropolis dig; opening several tombs, Josh finds treasure, clues and haunting remains; testing results may prove they've discovered Egypt's oldest royal mummy.

Looking to answer enduring questions around Moses' existence and the story of Exodus, Josh takes an epic adventure that starts with opening an ancient Egyptian tomb and ends with trekking what could be the true Mount Sinai.