The Doctor speaks with the alien captain and learns the astronauts sent to Earth were ambassadors. However, before he can alert the authorities he is kidnapped by Reegan.
Quest roles:
Nicholas Courtney(Brig. Lethbridge-Stewart), John Abineri(Ranquin), Ronald Allen(Ralph Cornish), Peter Halliday(Soldier), Ric Felgate(Astronaut), Steve Peters(Astronaut), Max Faulkner(Nesbin), Joanna Ross(Control Room Assistant), Carl Conway(Control Room Assistant), Peter Noel Cook(Alien Space Captain), William Dysart(Reegan), Neville Simons(Astronaut)