It's not often thought of in these terms, but A Christmas Carol is all about being a Peeping Tom. Both the readers and the protagonist spend an unusually large amount of time simply watching others go about their business without realizing that they are being observed. Creepy, much? It is striking that while the ghostly invasion of Scrooge's home is felt by him to be a distinct violation, no one questions the ethics of surveillance as he and the ghosts eavesdrop on conversations and peer into the private celebrations of others. We guess Dickens had a thing for double standards.
The weirdest thing about this book is that Scrooge grows into an ethical person by doing a totally unethical thing—spying and snooping.
The many transitions and transformations that Scrooge's house undergoes make it not really a home at all, but more of a no-man's-land.