The Doctor and Jo arrive on the planet Kastopheria, a planet rich in natural resources, where they quickly become involved in keeping the delicate peace between the civilized races who wish to exploit the planet's resources and the native population.
Pg 9 Inside a shrubbery, on the outskirts of town, the planet Kastopheria.
Pg 1 "She and the Doctor had just survived a terrifying encounter on the planet Spirodon." Planet of the Daleks.
Pg 2 "One day there would be someone else, someone from her own world and time perhaps..." Foreshadowing for Cliff Jones, The Green Death.
Pg 3 "There's a place called the Eye of Orion I must take you to one day. And of course there's Metebelis Three, famous blue planet of the Acteon Galaxy." The Five Doctors, The Green Death/Planet of the Spiders.
Pgs 3-4 "She shuddered, thinking of Spiridon and its poison-spitting plants." Planet of the Daleks.
Pg 15 "Venusian Aikido is highly effective in a defensive situation." The Mind of Evil etc.
Pg 38 Reference to the Daleks.
Pg 40 "Jekkarta is legal, or semi-legal, over most of the galaxy." Jekkarta also features in Shakedown.
"'Skar,' said Garon. 'Also known as skoob, sting, slash...'" Skar also features in Mean Streets, although it goes by the name of skoob there.
Pg 50 "Look how well you did on Spiridon, and on Peladon, and on that weird planet where they had the Scope. And before that you tackled the Autons and Axons and Azal, not to mention the Master popping up all the time..." Planet of the Daleks, The Curse of Peladon, Carnival of Monsters, Terror of the Autons, The Claws of Axos, The Daemons.
Pg 68 "The Doctor responded by telling him about omnivorous monsters called drashigs which he and Jo had encountered not long ago." Carnival of Monsters.
Pg 86 "I remember once at Gatwick..." The Faceless Ones/Evil of the Daleks.
Pg 98 "Were the oppressed People of today the survivors of some once great, highly technological civilisation, like the one he'd met on Exarius years back?" Colony in Space.
Pg 102 "After the death of her parents in a solar yachting accident" Possible reference to Shakedown.
Pg 141 "Well, I am an honorary noble of the court of Draconia." Frontier in Space.
Pg 166 Reference to Sergeant Benton.
"Did I ever tell you about a species called the Rutans?" Horror of Fang Rock.
Pg 170 "It's not as simple as blowing up Daleks, is it?" Planet of the Daleks.
Pg 242 "'A wheezing, groaning sound,' said Walton disgustedly. 'What sort of description is that? Have you been drinking, Avery?'" This joke also appeared in Blood Harvest.
OLD FRIENDS AND OLD ENEMIES
NEW FRIENDS AND NEW ENEMIES
Chateris, Walton, Kryll, Makos, Garon, Zylor, Rik, Avery.
PLUGGING THE HOLES [Fan-wank theorizing of how to fix continuity cock-ups]
FEATURED ALIEN RACES
Pg 10 The People, giant humanoid figures with deep golden-bronzed skin and thick dark curls, who look like the giant statues on Easter Island.
Pg 164 River voles, although we don't actually see them.
Pg 177 Fiery red ants.
Pg 4 The jungle planet Kastopheria, colloquially known as Catastrophea.
Pg 245 A secret location, somewhere in the United Planetary Association.
Pg 246 The Imperial Chamber, Draconia.
Pg 248 A UPA telecast room, location unknown.
IN SUMMARY - Robert Smith?
In every conceivable way except appearing via cathode rays, this is exactly a third Doctor and Jo television adventure from 1973. Simple without being simplistic, Catastrophea is an unusually original tale from Terrance Dicks that knows exactly what it wants to be. It's the ultimate Past Doctor Adventure in some ways, because they don't get much more authentic than this. Only the word "rape", overdoing the Casablanca stuff and reusing the wheezing/groaning joke from Blood Harvest let this down.