Ko Sho Blo! Trigger-happy space police the Judoon are targeting 21st-century Gloucester. The Doctor, Yaz, Ryan and Graham race back to Earth in order to prevent them doing too much damage to the cathedral city. But who are they looking for, and what did they do to incur the wrath of the Judoon?
Doctor Who continues next Sunday 26th January with 'Fugitive of the Judoon' on BBC One and BBC America. Written by Vinay Patel, and directed by Jamie Magnus Stone. Guest starring Jo Martin, Neil Stuke, and Ritu Arya.