Doctor Who story by DJ Tyrer. Emrys Bach, a Time Lord, is travelling with the 5th Doctor, Tegan and Nyssa, when they are sent to Tersurus by the CIA. Meanwhile, the 4th Doctor and Leela find themselves on Drornid. Both incarnations of the Doctor find themselves opposing plots by Faction Paradox to unleash a powerful Gallifreyan weapon.
- Faction characters encountered in this story include Cousin Celephais (Brother Celephais in the Drornid sequence), Cousin Kreiner, The Lord, Mother Susan and The Godfather.
- The story is riven with paradox, as one might expect...
- A third iteration of the Gallifreyan weapon appears in The Last Battle.