Doctor Who - The Three Doctors (3)

Seizoen: 10 - Aflevering: 3 / 333 - Eerst uitgezonden: 13 januari 1973 - Episode ID: 75505

England, the near future. A strange anti-matter creature arrives on Earth and attacks UNIT HQ. It seems to be specifically seeking the Doctor out - but why? With the Time Lords themselves unable to help, it seems the only person who can help the Doctor is himself - or selves...