Ah, okay, I see the Agatha Christie and Jane Austin references now. I'm not too surprised I didn't get them as I'm not all that well-read and they're kinda out of my wheelhouse.
Now that I know that was Stephen King, I feel silly not having put it together.
I've had very little interaction with Roald Dahl's works, I'm finding out. I've seen all three Wonka films (the 1971 Gene Wilder film the only one worth remembering IMO) but that's about it.
And about "Ol' Billy Shakes": I've heard that name tossed around some because of how Shakespeare's plays were meant for the common people, rather than be the stuffy high-brow entertainment it's been held up to in more modern times.