Secret of immortal Nicholas Flamel

Yeah it's a title of one of Michael Scott's book series, it's a fiction book about a boy and a girl (twin) who can use magic one to save the world and other to destroy.
I love these books because the story makes me think a little harder than read another books. Even I can predict where it ends I still love it.
Have you readers read these book series?

-well these aren't mine, I take the photos from google but I swear I have it here in my house (You are welcome to see it here :p)-

I really hate to see the necromancer one, see it's different =='
I have searched that book at a lot of bookstores such as kinokunia, times and periplus in several places too and in a LONG LONG time.. But I still can't find the Necromancer. So one day when I'm (once again) visited a bookstore (okay I forgot what bookstore I think it's times but I'm not sure) I found that "the Necromancer" with that cover. I quickly asked the one in charge if there's a book with the cover like this :

But she (or is it a he?) say it is the LAST ONE. SO without thinking twice I bought it and as quick as I bought it, I regretted it. You must be thinking why?
Because..... The next day after I bought that LAST ONE the Necromancer, comes the new bunch of "the Necromancer" books with the cover I want!!
Well what can I do? I have no money left (pity me!) and if I got some, I won't waste it for the same book
At least I can read the Necromancer earlier a day and didn't have to extend my time of waiting, right? hehe

Now I'm waiting for the last series of the secret of immortal Nicholas Flamel-the enchantress-by Michael Scott (hope it will out soon!! )
What do you think about these series? (please comment if you have some opinion_thanks :))

You can also have more information about this book at http://www.flamels-immortal-portal.com/