I believe it is called Sign of the Moon, after that, I have NO idea.
Hope this helps.
Night Whispers.
Erin Hunter's new book can be anything in the future. The recent book that just came out from Erin Hunter was, Omen of the Stars, the Fourth Apprentice. Otherwise, you can say, any other book that Erin Hunter writes besides Warriors.
The book after Erin Hunters moonrise is Dawn
Erin Hunter's next book will be called Night Whispers and Rick Riordan's next book will be something about Egyptian mythology.
It is Moonrise.
Erin Hunter
Nope.
Dark River
Yes
Erin Hunter
The last hope
Erin Hunter is known for writing the Warriors book series about feral cats and the Seekers book series about bear cubs. It should be noted that these books are actually written by multiple writers and an editor who work together under the pseudonym "Erin Hunter."