Aside of that - story is stretched, unbelievable and unreal.
So... While I could get used to Matthew Rhys as Mr. Darcy and Matthew Goode (whom I really like) as Mr. Wickham, Anna Maxwell Martin doesn't have that "something" to be Elizabeth. Still, I could bear that - but each and every character (except for Mr. and Mrs. Bennett) had been so changed, that we wouldn't recognize them without their names.
Darcy is more narrow minded than in the beginning of P&P - although JA stated that marriage made him milder.
Elizabeth and Lady Catherine still can't stand each other - although JA made it clear that Lady Catherine overcame her share of prejudice and became a dear guest to new lady of Pemberley.
Wickham is all of sudden brave soldier, as if we forgot that he really had no qualities whatsoever, except his charm.
And, just when you thought you saw all, you realize that Lydia is a wise woman, devoted to her marriage, that deliberately closes her eyes to her husbands affairs. As if we don't know that she is spitting image of her mother - not deliberately blind, but truly blind. And while Jenna Coleman was the best casting part of the show, some things, like her recklessly throwing her coat behind her and generally wearing red, were just pushing over the borders of normal, even for Lydia.
Georgiana's falling on the floor in tears and despair in front of the servants is something that Georgiana would never do.
Mrs. Younge to be governess to Georgiana needed to be at least a decade, if not two, older and her being Mr. Wickhams sister is plain silly.
And, above all - The Fall of Col. Fitzwilliam is probably the saddest part of the show. Darcy, knowing him his all life, could not have been so blind about him.
And, just one more thing - the Darcys are one of the richest people in England of that time. It is: 1. Next to impossible that his grandfather nearly lost everything; 2. Impossible for him to lose reputation so easily and quickly, based on scandal with his brother-in-law; 3. Absolutely impossible to have that scandal ruin him financially that he would need to rely on Col. Fitzwilliam.
There are no elements of horror. They talk about a ghost, but that is all.