The Catacombs Episode Guide

The Dorcons

The Immunity Syndrome Year 2 - Episode 24

Writer Johnny Byrne
Director Tom Clegg
Guest Stars Patrick Troughton, Ann Firbank, Gerry Sundquist
Original Title Return Of The Dorcons
Belgium (Flemish) De Dorcons 15 Apr 1978
Spain Los Dorkons The Dorkons7 Dec 1977
France/Canada Les Dorcons The Dorcons 6 Aug 1977
Italy I Dorconiani 25 May 1979
Japan Maya! Forever is here, ALPHA... 19 Jun 1981
Portugal Os Dorcons The Dorcons 28 Jan 1978
USA (New York) 7 May 1977
USA (San Francisco) 2 Apr 1977
UK (ATV) 28 Aug 1978
UK (LWT) 12 Nov 1977

The Dorcons -the most powerful race in the galaxy -demand that the Alphans hand Maya over to them. Koenig refuses, until Moonbase Alpha is savagely attacked and invaded! Then, having let them take Maya he makes a desperate attempt to save her.... ITC summary


The Dorcons
behind the scenes


Int. Command Centre
Int. Alpha Corridor
Int. Alpha Corridor Outside Airlock 2
Int. Travel Tube
Int. Weapons Section
Int. Eagle Pilot Section

Int. Dorcon Stateroom
Int. Dorcon Operations Area
Int. Dorcon Corridor
Int. Dorcon Ventilation Duct
Int. Dorcon Transfer Room


The Dorcons The Dorcons The Dorcons



The Dorcons

The raw materials of the ship are: 'Carbon/ Hydrogen/ Argon/ Rebillum'. Carbon and hydrogen are the building blocks of organic chemicals. Argon is an inert gas. There is no such substance as Rebillum. Strangely there is no oxygen (for atmosphere) or any metals (iron, aluminium or titanium for the ship's structure).



2409 days after leaving Earth orbit (Tue 18 Apr 2006)

Alpha Personnel:

2 fatalities, Thompson, another pilot.

Alpha Technology:


Four combat Eagles incl. Eagle 4 are destroyed

Maya transformations:

Ape-lizard animal, Alphan (L Picard), dove (partial transformation).

The Dorcons The Dorcons The Dorcons




Archon, Varda, Malic from planet Dorca

The Dorcons - Archon The Dorcons - Varda The Dorcons - Malic The Dorcons - 2nd Dorcon soldier The Dorcons - 4th Dorcon solider The Dorcons - Dorcon operative The Dorcons - Dorcon Female Medical Officer The Dorcons - 1st Dorcon solider


The Dorcons

The Archon's throne was used as Arra's throne in Collision Course and Companion's bed in The Infernal Machine. His chair is a design normally seen in Alphan living quarters (the ribbon chair, designed by by Pierre Paulin). On either side of the throne are obelisks previously seen in A Matter Of Balance and Devil's Planet

The Dorcons

The Dorcon laser sights are identical to the Alphan laser sights seen in War Games

The Dorcons

The laser control dial from The Exiles is seen on Koenig's desk


The Dorcons

Laurence Harrington appeared as another Alphan, Jackson, in Journey To Where


The Dorcons

As three of the four Eagles veer off, the two that fly to the right of the screen briefly merge.

The Dorcons The Dorcons

When the guards flee and the Alphans escape, Varda's body is on the floor. In the next scene, her body has disappeared. Thanks to Thomas.




The Dorcons

External Links

Contents copyright Martin Willey