The Lost Army of Cambyses

In 523 BC, the Persian pharaoh Cambyses dispatched an army across Egypt's western desert to destroy the oracle at Siwa. Legend has it that his army was overwhelmed by a sandstorm and lost for ever...

Two and a half millennia later a mutilated corpse is washed up on  the banks of the Nile at Luxor, an antiques dealer is savagely murdered in Cairo, and a British archaeologist is found dead at the ancient necropolis of Saqqara.