A secret research project on the moon goes horribly wrong, trapping Amy and the TARDIS there while the Doctor ends up in the Texas desert.
Pg 15 In a car park, London, present day.
Pg 25 The moon.
Pg 247 Hibiscus Base.
Familiarity with The Mind of Evil, The Ambassadors of Death and The Seeds of Death would probably be helpful. Then again, since the plot is essentially an amalgamation of all three, perhaps not.
Pgs 18-19 "Mind you, I haven't died for months" The End of Time.
Pg 21 The sonic screwdriver makes an appearance (Fury From the Deep et al).
Pg 23 The psychic paper also makes an appearance (The End of the World et al).
Pg 55 "There'll be a whole penal colony here in a few hundred years" Frontier in Space.
Pg 63 "Only the bad, negative inclinations. The Keller impulses." The Mind of Evil.
Pg 87 "I didn't think there was a direct link from Earth to the moon until T-Mat got going and that won't be for a while yet." The Seeds of Death.
Pg 118 "'Memory cheats,' Liz said sleepily. 'Other people's memories are not their own.'" The phrase "the memory cheats" was coined by John Nathan-Turner to describe fans' rose-coloured views of early Doctor Who stories in the eighties.
Pg 144 "UNIT, Torchwood, Operation Yellow Book..." UNIT was the paramilitary organisation the Doctor worked with in the seventies (or was it the eighties?), first seen in The Web of Fear. Torchwood was the entirely different secret organisation tasked with claiming alien technology, first mentioned in Bad Wolf and founded in Tooth and Claw.
Pg 147 "They found a way to use the M3 Variant fuel developed by the British Rocket Group for their aborted Mars Probe Missions way back." The Ambassadors of Death.
Pg 148 "Got my Mars-Venus license" Robot.
Pg 162 "Geronimo!" The End of Time et al.
Pg 229 "I probably have a jammy dodger of my own somewhere. Usually do." Victory of the Daleks. But see Continuity Cock-Ups
OLD FRIENDS AND OLD ENEMIES
NEW FRIENDS AND NEW ENEMIES
Agent Jennings, General Walinski, Candace Hecker, Pat Ashton, Major Carlisle, Captain Reeve, Liz Didbrook, Nurse Phillips.