Episode 114 - The Keeper of Traken

The peaceful world of Traken is famed for it's harmonius nature, so much so that any evil force that lands on it cannot sustain itself for long. However, something else has landed there and has taken root.   This week Paddy and Tricia follow The Doctor and Adric as they return to N-Space, where they are immediately summoned to Traken by it's revered Keeper, who is close to death and needs there help to save his world. Can they uncover the mystery of the evil has has begun to seep into planet and prevent it from taking on the power of the Keeper of Traken?