Since the 8th Doctor spin-off Faction Paradox canon-welded Hellraisers I & II into the Whoniverse I say the first Candyman and the director's cut of Nightbreed should count too.
And Nightbreed made it seem as though there weren't a whole lot of Nightbreed to begin with. And now there were only a handful left after centuries of persecution. So that can easily fit too.
"The truth is the world is so much stranger than that. So much darker. So much madder. And so much better."
Yay? Nay? Indifference?
The Mary Shelley episode firmly established that ghosts do in fact exist in the Whoniverse.
"The truth is the world is so much stranger than that. So much darker. So much madder. And so much better."
Yay? Nay? Indifference?