1977-11-12 • 51 min
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....
Nick Tate
Alan Carter
Patrick Troughton
Archon
Ann Firbank
Consul Varda
Gerry Sundquist
Malic
Laurence Harrington
Stewart
Alibe Parsons
Alibe
Michael Halsey
Dorcon Soldier
Kevin Sheehan
Dorcon Operative
Hamish Patrick
Command Center Alphan
Hazel McBride
Medical Officer
Harry Fielder
Medic (uncredited)