Guest Stars Nicholas Lea as Tri-Lorn Grace Park as Doctor 26-Carol Ryan McDonell as Courier Pilot David Avalon as Professor Wel-Dar David Palffy as Academician Ler-Near Suzy Joachim as Doctor Professor Kor-Kavo Michael Chase as Tri-Lorn Assistant Michael Puttonen as Professor Bu-Habib Rob Lee as Head Bailiff Drew McCreadie as Alien Scientist