"It's a psychological thriller"

I'm reading Wuthering Heights. I bought it because it figures on the long list of classics I want to read, I thought it would be similar to leafing through Pride and Prejudice (Oh, Mr. Darcy. Yes. Yes, Yes.), and I desired my vision of a stunning, strategically located manor house (buffeted by the strong winds of the English moors) filled with beautiful, coy characters to be satisfied. Also: Penguin put out a new paperback edition with a lovely (read: innocent yet delightfully sinful) front cover.

Needless to say, the book is completely different from what I expected. The main female character - Catherine - is a dumb, frivolous, hysterical CRAZY and Heathcliff (apparently to some just as brooding and mysterious as Darcy) is really a bloody PSYCHO. Who tries to hang a puppy from a fence, I ask you?

Good God, what in heaven's name happened to Emily Bronte to have perturbed her so?