The Doctor, Yaz, Ryan & Graham split up across Peru, Madagascar and Hong Kong to investigate mysterious events across 21st century Earth. As the mystery deepens, and lives are put at risk, the TARDIS team face a deadly race against time to save humanity from an alien virus.  Join us this week — as we dodge birds swarming like mad & astronauts crashing out of orbit — to watch episode 6 of the new season:  PRAXEUS.