Imagine a war where time itself is being used as a weapon. The Doctor,
Fitz and Anji arrive at Isolation Station Forty, a military research
establishment on the verge of a breakthrough. A breakthrough which will
change the entire course of the war. They have found a way to send
soldiers back in time.
Fitz and Anji.
Pg 12 Near Isolation Station 40, unnamed planet.
The Adventuress of Henrietta Street.
Pgs 8-9 "It didn't take us this long to get to Endpoint." We get a summary of Hope, including a reference to Dave.
Pg 9 "And she still thought of Dave, of course, but no she didn't feel sad." Followup to the closure she felt at the end of Hope.
"'What was that?' said Fitz, turning round a moment too soon. 'Oh, nothing,' said the Doctor evasively. 'Well, nothing much. Just something I picked up in a little book shop in London in 1938 -'" This is Fitz's future diary, from Time Zero, whose existence measures the collapse of the multiverse. It's also seen in Timeless and Wolfsbane.
Pg 14 "This is even worse than Endpoint." Hope
Pg 17 "Stunned, the Doctor sprawled into the snow. Seconds later, he rolled on to his back and clutched his chest. He gasped as if surprised at his own frailty." The Doctor's frailty is a result of the removal of his second heart in The Adventuress of Henrietta Street, with similar symptoms of frailty and weakness seen in Hope.
Pg 53 "'After all that business with his heart - sometimes I think he needs protecting.' 'Who from? Sabbath?'" The Adventuress of Henrietta Street.
Pg 62 "Fitz shuddered. He had a uneasy sense... a sense that some of his own memories had clouded over." This started happening in Escape Velocity and was notable in EarthWorld. It'll eventually get resolved in Halflife. Oh, and see Continuity Cock-Ups.
Pg 67 "Fitz coughed shyly. 'But I've seen you naked -'" This happened in both The Adventuress of Henrietta Street and Mad Dogs and Englishmen.
Pg 100 "A man in a bowler hat was walking through the mud, checking something from a clipboard." This phrase appears in the Doctor's flash-forward on page 271 of Father Time. Interestingly, the wording is slightly different here.
Pg 108 "The whole set-up was odd. No, it was past odd. Odd was the planet of talking poodles." Mad Dogs and Englishmen.
"Not even the sonic screwdriver will get us out of this one." Paraphrase of the fourth Doctor's aside to the camera in The Invasion of Time.
Pg 136 "That's how time works, I'm afraid. It's the second... no, first rule." This was a running joke from Festival of Death.
Pg 138-139 "'Take away a man's past and you take away the man?' said Paterson. 'Yes,' said the Doctor. He hesitated as though some memory had been disturbed." Reference to the Doctor losing his memory at the end of The Ancestor Cell.
Pg 140 "Hammond walked over to his bag, collected a stethoscope and plugged it into his ears. He placed the drum to the left of Mistletoe's chest and listened. He repeated the process on the opposite side. 'Standard condition. No depreciation.'" Sabbath (disguised as Mistletoe) recently received the Doctor's second heart in The Adventuress of Henrietta Street.
Pg 149 "'The problem with safety features is,' muttered the Doctor, fiddling with renewed urgency, 'that they're very difficult to override.'" Paraphrase of the fourth Doctor's line in Robot.
Pg 153 "For the first time ever we're up against a bunch of alien weirdos who aren't immune to being shot" Paraphrase of the Brigadier's line in Robot.
Pg 170 "I still have one heart left, you know." The Adventuress of Henrietta Street.
"With Dave, with Dave... I know I shouldn't have trusted Silver" Hope.
Pgs 174-175 "But soon it became apparent that he had lost something. Not just his heart, but a part of who he was. [...] He was quick to tire, and given to irritability, even sudden explosions of anger. [...] Ever since that terrible day in the Kingdom of Beasts, the Doctor had become almost human." The Adventuress of Henrietta Street.
Pg 193 "A man after my own heart." Or vice versa. The Adventuress of Henrietta Street.
Pg 204 "No respiratory bypass, you see." Pyramids of Mars.
Pg 207 "But now the rules had changed. The Doctor could get ill, the Doctor could tire and become irritable." The Adventuress of Henrietta Street.
"You can never remember anything when it's really important." Paraphrase of an outake of Tom Baker's to K9, from rehearsals for The Stones of Blood.
Pg 216 "Presumably it's the strain of doing the work for two." The Adventuress of Henrietta Street.
Pg 244 "'It has been four centuries you know,' said Mistletoe snidely under his breath. 'I doubt you could remember more than a quarter of that.'" Reference to the Earth arc.
Pg 253 "Like a man who still sometimes feels the beat of a second heart." The Adventuress of Henrietta Street.
Pg 255 "That's how time works, I'm afraid. It's the second... no, first rule." As we revisit the scene from page 136, so too, we revisit the joke. It's a lot less funny in this book, isn't it?
Pgs 259-260 "The Endpoint guard picked up the apple core and examined it." Flashback to Hope.
Pg 260 "But he would not intervene, he would not rewrite a single line." The Aztecs.
"A world of dogs?" Mad Dogs and Englishmen.
Pgs 260-261 "Sabbath's hand pulled away from the Doctor's chest, clutching something black and oily, something palpitating." The Adventuress of Henrietta Street.
Pgs 274-277 "A tall, thickly-built man, with a jowly chin and an accusatory brow. [...] There was the bassy boom of a great throbbing engine and the shriek of apes." Sabbath and the apes, The Adventuress of Henrietta Street.
OLD FRIENDS AND OLD ENEMIES
Sabbath and the apes.
It's not stated outright, but the time sensitive aliens, who can turn
people into clocks when they choose to alter their pasts were intended to
be Faction Paradox in the 'real' version of the planet. The modus operandi
of both is similar: they give people the chance to create a paradox
(chiefly, by altering the past in a way that would nullify the
circumstances leading to the opportunity to make that change) and the
individual's agreement to do so basically means that they had joined the
relevant group, with or without their conscious consent. Here, Sabbath
uses the Doctor to eliminate Faction Paradox entirely.
NEW FRIENDS AND NEW ENEMIES