WOW! A brilliant story... I only saw this complete story recently on BBC DVD, and boy, I was impressed! Jon Pertwee, in his third story as the Doctor, is marvellous. To me it shows him setting the foundations for the rest of his WHO career. The plot is also brilliant, given it is the eventual work of FOUR script writers: David Whitaker, Terrance Dicks, Trevor Ray and Malcolm Hulke. The conspiracy plot and mystery of the ambassadors creates an eerie setting, sending the Doctor into deep space and Liz Shaw into trouble. What interested me when I first saw Part One was the opening titles. The splitting of the titles (music, graphics and text: DOCTOR WHO; and electronic sting, graphics and text: THE AMBASSADORS... OF DEATH, BY David WHITAKER, PART ONE) helps generate a sense that this is something big. The scene slotted between the DOCTOR WHO and THE AMBASSADORS OF DEATH allows the cliffhanger from the previous episode to be replayed, creating an even bigger sense of evil. Overall, THE AMBASSADORS... OF DEATH is a brilliant, 1970s example of "Who", full of death, action fight, conspiracy and mystery. If you have not yet seen it, go and buy the DVD and enjoy. You will not be disappointed.