By the time I started to read the first serie, Vampire Academy, (which initially struck me as one of those vampiric yada-yada cliches) I couldn't stop reading thereafter. So I ended up reading the whole 5 series of it straight for just in a what, like 5 days I think! Can you believe that? Not to mention, I'm still a novice bookish person. This proves Vampire Academy to be one of those gripping and compelling books!! Believe me, it's addictive! Now all I have to do is wait for its last book, Last Sacrifice!! I'm so happy I took the risk to read it in the first place, or else I will never gonna read it... 
 PS: Lesson learned - Don't flinch at the book's title as well as to its cover until you finally read what's its inside. =)