Welcome to 1967, in which the second Doctor Who - Patrick Troughton - takes his companions to the moon for the first true Base-Under-Siege story: 'Sleep No More'. Time Ram wields a very sharp scalpel to uncover Ben's chain of sacrifice, James Bolam in an accent-off and the ever mysterious Heron Carvic. What is it like to be fingered by a Sandman? Can we invent a Ralph? And is that Schnorbitz hiding in the shadows? With at least 50% of this story missing, maybe we will never know... Also, Peter Capaldi gets a mention.