With Cybermen on the streets of London, old friends unite against old enemies and the Doctor takes to the air in a startling new role. As the Doctor faces his greatest challenge, sacrifices must be made before the day is won.
Episode rating
Cast of episode
- Clara
- The Doctor
- Danny
- Missy
- Seb
- Osgood
- Kate Stewart
- Colonel Ahmed
- Boy
- Teenage Boy
- Teenage Girl
- Teenage Boy
- Graham
- Cyberman
- Daleks
- Santa Claus
- Cyberman
- Cyberman
- Alastair Lethbridge-Stewart
- Cyberman
- UNIT Soldier
- Undercover Unit Officer
- Cyberman
- The Doctor