Doctor Who: Season 12, Episode 6

12 - 6: Praxeus

What connects a missing astronaut, birds behaving strangely in Peru, and a US naval officer who washes up on a Madagascan beach? The Doctor, Yaz, Ryan and Graham split up to investigate mysterious events across 21st century planet Earth. As the mystery deepens, and lives are put at risk, the TARDIS team face a deadly race against time to save humanity.