Season Nineteen - 1982
5Z. Castrovalva: The Master traps the Doctor in a mathematically created world
MA. Cold Fusion: More than one TARDIS lands on a barren ice world
5W. Four to Doomsday: The Monrach plans to poison Earth and re-populate it with androids
5Y. Kinda: On Deva Loka Tegan is enchanted and falls under the influence of the Mara
5X. The Visitation: The Terileptils attempt to invade Earth by releasing the Black Death
PDA. Divided Loyalties: The Doctor receives a telepathic call for help from a classmate lost to the Celestial Toymaker
6A. Black Orchid: The Doctor is expected at a cricket game, and Nyssa is the subject of mistaken identity
6B. Earthshock: The Cyberman attempt to destroy a meeting on Earth by crashing a freighter into the planet
6C. Time-Flight: The Doctor manages to return Tegan to Heathrow where Concorde's have been disappearing
PDA. Empire of Death: The Doctor and Nyssa are shocked when a ghost appears in the TARDIS
6C/A. The Land of the Dead: Alaska: The TARDIS departs avoiding an accident; thirty years on the Doctor and Nyssa find creatures
6C/B. Winter for the Adept: Due to a teleportation accident Nyssa finds herself in the Swiss Alps, 1963
6C/C. The Mutant Phase: Daleks have occupied 22nd century Earth. By the 43rd century only a handful of humans survive
Season Twenty - 1983
6E. The Arc of Infinity: Omega returns by cloning the Doctor's body
MA. The Sands of Time: Victorian London: Nyssa is kidnapped. What does the history of ancient mummy have to do with Nyssa?
PDA. Zeta Major: A remark made by a past Doctor has a big effect two thousand years later on the empire of Morestra
PDA. Fear of the Dark: 2382: Archaeologists land on Akoshemon's moon, searching for evidence of the planet's infamous past
6D. Snakedance: Tegan is again under the control of the Mara
MA. Goth Opera: Nyssa is attacked by a child when on a holiday. She escapes with two small marks in her neck
6F. Mawdryn Undead: A group of scientists who have achieved immortality seek death
6G. Terminus: The Universe comes close to destruction when a ship's automatic pilot nearly dumps fuel
6H. Enlightenment: Eternals are racing yachts; the winner will achieve enlightenment
6J. The King's Demons: The Master plans to alter the course of history by preventing the Magna Carta from being signed
MA. The Crystal Bucephalus: When dining in a time travelling restaurant, the Doctor and companions are accused of murder
6K. The Five Doctors: All the Doctors are brought together to help, and stop, the President of Gallifrey become immortal
Season Twenty One - 1984
6L. Warriors of the Deep: Surviving Silurians plan to wipe out humanity by provoking global nuclear war
PDA. Deep Blue: The Doctor and his companions hope for a little time off, and arrive near Tayborough Sands, 1970
6M. The Awakening: War game reconstructions have provided the Malus with the psychic energy is needs to reawake
PDA. The King of Terror: At the end of millennium the future of humankind hinges on the activities of a multimedia company
6N. Frontios: The Tractators have been creating tunnels with the aim of turning Frontios into a space vehicle
6P. Resurrection of the Daleks: The Daleks attempt to rescue Davros from the ship takling him to trial
MA. Lords of the Storm: The Rutans' and Sontarans' conflict has been long, but one side may have victory within its grasp
PDA. Imperial Moon: The year is 1878: Three ships of the British Imperial Spacefleet have just set course for the moon
6P/A. Phantasmagoria: The TARDIS takes the Doctor and Turlough to London in 1702
6Q. The Planet of Fire: The Master has been shrunk after an accident with his tissue compression eliminator
PDA. The Ultimate Treasure: The quest for Rovan's hoard: what is it, and why has it remained undiscovered for so long?
PDA. Superior Beings: Deep beneath a pleasure-planetoid something is waiting...
PDA. Warmonger: A chain of events has been set in motion that will change the Doctor and Peri forever
6Q/A. Red Dawn: Ares One: NASA's first manned mission to the dead planet Mars. But is Mars as dead as it seems?
6R. The Caves of Androzani: The TARDIS arrives in the middle of a battle between a military force and rebels
7Z. The Sirens of Time: Gallifrey is in a state of crisis and three incarnations of the Doctor must join together
