138. The Cradle of the Snake
Tegan's nightmares have returned. Seeking to banish the snake-like Mara from his companion's psyche, the Doctor sets course for Manussa, the creature's point of origin. But the TARDIS arrives instead in the heyday of the Manussan Empire, where infotainment impresario Rick ausGarten is preparing to turn dreams into reality.
The sun is setting on the Manussan Empire… and it's all the Doctor's fault.
Written By: Marc Platt
Directed By: Barnaby Edwards
Peter Davison (The Doctor), Janet Fielding (Tegan Jovanka), Sarah Sutton (Nyssa), Mark Strickson (Vislor Turlough), Dan Stevens, Vernon Dobtcheff, Hugh Fraser