Arc of Infinity
- Episodes: 4 Episodes
- Doctor: 5th Doctor
- Companions: Nyssa, Tegan
- Aliens/Monsters: The Ergon, Time Lords, Omega
- Setting: Earth, Gallifrey
Arc of Infinity Synopsis
An antimatter creature has crossed into normal space via a phenomenon known as the Arc of Infinity but needs to bond physically with a Time Lord in order to remain stable. A traitor on Gallifrey has chosen the Doctor as the victim.