The Doctor finds himself on an island... of death!
Sarah Jane Smith.
Pg 26 Brief flashback cameo by Sergeant Benton.
Pg 33 Africa (although no one disembarks).
Pgs 36/37 The bottom of the Pacific Ocean. Unsurprisingly, no one disembarks.
Pg 38 Back at UNIT HQ.
Pg 7 The Metropolitan, Sarah's newspaper, was mentioned in The Time Warrior.
Pg 18 "Without it (or should it be 'without her'?), she'd have been stranded in medieval England, or on the planet of Parakon" The Time Warrior, The Paradise of Death.
Pg 21 "My name is John Smith." The old joke, oh-so-hilarious when first used in 1970, gets trotted out one last time. We can only hope.
Pg 28 "And how well did the police cope with the Yeti? Or the Autons? Or the Cybermen for that matter?" The Web of Fear, Spearhead from Space/Terror of the Autons, The Invasion.
Pg 31 "I'm due four weeks, what with missing last year's because of that Space World thing" The Paradise of Death.
"You've had a holiday. You went to Sicily." Ghosts of N-Space.
Pg 111 "'I'm sorry,' she gasped, 'but I can't swim.'" Death to the Daleks.
Pg 121 "'I'm just being childish.' 'And what's wrong with that?' said the Doctor." Robot.
Pg 127 The sonic screwdriver (Fury From the Deep et al).
Pgs 143-144 "From the frustrations of his job with UNIT - especially since he'd teamed up with the Doctor, and encountered an extraordinary variety of unpleasant alien creatures, more of whome seemed to be impervious to bullets - he'd learnt not to expect clean-cut military operations like those he'd encountered in World War Two." Robot, Deadly Reunion.
Pg 180 "You mean the Experienced Reality thing on Parakon?" The Paradise of Death.
Pg 196 "Good grief! Was he feeling his age? Maybe the time for his next regeneration was just around the corner." It is: Planet of the Spiders follows shortly after this.
Pg 211 "Perhaps he should take up some form of sport. He'd always fancied cricket." The fifth Doctor.
Pg 239 "In spite of their semi-humanoid shape, in the mass they seemed as utterly alien as any Dalek." You all know who the Daleks are. If not, this must be a very perplexing website you've stumbled across.
OLD FRIENDS AND OLD ENEMIES
Pg 13 Chlorinda, Sarah's editor, also appeared in The Paradise of Death.
NEW FRIENDS AND NEW ENEMIES
Pete Andrews, Bob Simpkins, Chris.
Mother Hilda, the Great Skang (the last two are time-looped at the end, but not dead).