What do you call a four book series
A four-book series is called a tetralogy.
There are four books in the Skeleton Creek book series.
No
The Isle of the Lost book series consists of four books.
At the moment, no. There were a total of four books in the Eragon series.
No. I am Number Four is a completely (but still very good) book that isn't related to the Maximum Ride (another amazing book series) at all.
Twilight is the first book out of four in the Twilight saga.
There are only four books in the series.
The eighth book in the Demonata series is call Wolf Island!
Book four in the Missing series by Margaret Peterson Haddix, titled "Sabotaged," was published in 2010.
Book One: The Lightning Thief Book Two: The Sea of Monsters Book Three: The Titan's Curse Book Four: The Battle of the Labyrinth Book Five: The Last Olympian This book is not really apart of the "Percy Jackson" series but the series it's in is a continuation of the series... That book is the "Lost Hero" by Rick Riordan.
Yes. Book four is scheduled to be released in 2014.