Or will it... ?

 

The author has already outlined a sixth book that will begin five years after "Heather" ends and follow all ten main characters.

 

She is also open to suggestions from fans for other books in the series!  Heather is a highly requested character, but there are many others that tie in with the circle...

 

And while all of the books involve the circle, one title character ties the group together - which character?