The Doctor decides to take Recovery 7 back into space to search for the missing astronauts but Reegan sabotages the launch.
Quest roles:
Nicholas Courtney(Brig. Lethbridge-Stewart), Cyril Shaps(Professor Klegg), Tony Harwood(Flynn), John Levene(RSM Benton), John Abineri(Richard Railton), Ronald Allen(Rago), Ric Felgate(Astronaut), Dallas Cavell(Quinlan), Steve Peters(Astronaut), Joanna Ross(Control Room Assistant), Carl Conway(Control Room Assistant), Roy Scammell(RSF Sentry), William Dysart(Reegan), Neville Simons(Astronaut), James Clayton(Private Barker)