I much preferred this book to The Hollow (book 1) as this book actually had a plot running throughout. I felt that with The Hollow it was to focused on the lead female's mental health issues, and as this is a paranormal romance series at heart that just wasn't what I was looking for. The Haunted had several convincing romantic parts, which I thought The Hollow was lacking as well.
The characters were much more developed in this second book as well. I could see the personalities of each character better, which made for a smoother read. I could really only see the main character, her mother and the lead male character's personalities in The Hollow. There is an evil character revealed in this book and a mystery surrounding them. This really hooked me, as well as the romance, of course. The settings were still described really well.
The next book has a plot on which to sustain itself as well, unlike book 2. I honestly feel as though book 2 is where the real story starts. You do have to read book 1 to understand the characters but please don't give up because you don't think it's very good as The Haunted makes me want to complete the trilogy.
I give this book 4.5 stars because I didn't think the characters, plot or anything was really lacking. If anything the only slight downside was the beginning, where the lead female character still thought she had a mental problem but after that the book got so much better, almost straight away.