The Doctor and Tegan meet again and remember their terrifying adventure against the Cybermen to save the Earth… and the friend they lost along the way.

The Doctor and Peri meet again and remember their conflict on the mining planet Varos: a world that entertains its people with sadistic TV broadcasts.

The Doctor and Ace meet again and remember their battle against an ancient evil in World War Two where a Viking curse is bringing the dead back to life.