S3, E1: When an exhibition of ancient Egyptian relics comes to the British Museum, an anomaly opens in a mysterious monument called the Sun Cage. A creature emerges from it - a kind of monstrous crocodile that can run on two legs. The team is joined by the ARC's new Head of Security, Captain Becker, and an archaeologist from the Museum, Sarah Page. The race is on to track the creature down before it hits the streets of London.