The team investigate the use of modern medical technology to scan Egyptian animal mummies from museums across the world. By creating 3-D images of their content, experts are discovering the truth about the strange role animals played in ancient Egyptian belief. Horizon meets the scientists working in Egypt who are exploring the ancient underground catacombs where mummies were originally buried to reveal why the ancient Egyptians mummified millions and millions of animals.

It is one of Egypt's enduring mysteries. What happened to Nefertiti and her husband, Akhenaten - the radical king, and likely father of King Tut? In a dark and mysterious tomb located in the Valley of the Kings, there is a small chamber with two mummies without sarcophagi or wrappings. At times, both have been identified as Queen Nefertiti by scholars, filmmakers and historians. But the evidence has been circumstantial at best.