The Vampire's Club: Book One

Okay, this series starts off interesting. I was really getting into it in books 2 and 3, but I slowly lost interesting by book 5. I'm so close to the end, but I can't get myself to care about the characters anymore. I do want to know how it ends, but not enough to keep pushing myself through two more books.
Interesting and I wouldn't tell anyone not to read it, but not my thing.