The crew encounter the System, builders and original owners of the Liberator (known to them as Deep Space Vehicle-2). They disable its defense systems in an attempt to try to get their craft back. A sister ship (DSV-1), in pursuit, is destroyed by Orac.
Elenco:
Michael Keating
,
Paul Darrow
,
Peter Tuddenham
,
Jan Chappell
,
Josette Simon
,
Sally Knyvette
,
Gareth Thomas
,
Steven Pacey
,
David Jackson
,
Glynis Barber
.
