Our 50th Anniversary countdown continues as Scott and Matt discuss Robert Holmes and the Third Doctor with the Jon Pertwee 4-part serial “Spearhead from Space”. The Doctor has been exiled to Earth where he is reunited with Brigadier Lethbridge-Stewart and UNIT just as an alien race known as the Nestenes arrive with plans to conquer the planet. Can the Doctor get over his recent regeneration in time to stop the Auton invasion? Why is this the only classic era story to be shot entirely on film? Just how good does this look on blu-ray? Find out in the latest episode of The Doctor's Companion! And remember, BEWARE OF SPOILERS!!

Next: Patrick Troughton and "The Enemy of the World"!!