They all have different names. The first series is called the Original Series, the second is called The New Prophecy, and the third The Power of Three. Erin Hunter is coming out with a new series called the Omen of the Stars. There is only one book out yet in that series which is called The Fourth Apprentice.
I think you're talking about a series as in trilogy, saga, or quintet. I don't know the name of anything other than that, but I just wanted to clear that up.
Your question doesn't make sense. There is a series called power of three but nothing called power of six. The next series is omen of the star starting with The Fourth Apprentice.
Yes, there is a fourth book in the "Vampire Academy" series called "Blood Promise," which was released in 2009. The series consists of six books in total.
A four-book series is called a tetralogy.
The Leven Thumps series is an incredible book series and I am hoping that there will be a next book out
Book six of series three-power of three
The third book in the Leviathan series is called Goliath.
please resubmit your question with more details.. WHAT SERIES?
a series of unfortunate events
it is called a series it should say what series it is on the cover or in the book
The third book in the series is called A FAREWELL TO CHARMS
The third book of the Dormia series is called: The Shadow Tree.
The fourth book of the Power of Three series is called Eclipse.