The “secrets” here are in fact well known, having made headline news across the world: the discovery in the Saqqara necropolis, just outside Cairo, of scores of mummified animals, including a lion cub, and an untouched tomb from the 25th century BC. But what makes this an exceptional documentary is the focus on the entirely Egyptian archaeological team, doing their bit in a quiet way to decolonise Egyptology and to demonstrate the emotional connection between the locals and the ancient civ