ive read all of them so far, but am not reading anymore because they go on and on nothing really get solved and new dramas and old dramas keep reoccuring....to many books. I would only recommend reading them if you can read them for free. so, yes they're. I would stop at five if you dont want to read them all.... vampire academy was a good shorter series
As per the reviews online, a lot of people have read 'The house of night' book series. The books are said to have a thrilling and engaging aspect which makes it possible for a lot of people to read them.