This article is about the unreleased ninth KOTLC book. You may be looking for Book 8.5: Unlocked.

On May 22nd, 2020, Shannon Messenger announced that there will be a ninth book in the Keeper of the Lost Cities series.

It has been scheduled to release in November of 2021.[1] The previous book is Unlocked, which was released on November 17, 2020.[2]

It will most likely include a Short Story, as three past books (Nightfall, Flashback, and Legacy) have, but a Short Story has yet to be confirmed. Shannon somewhat confirms in an interview that both of Sophie's biological parents would be revealed by the tenth book.

What We Know

  • New art will be released with the coming of this book.
  • Shannon Messenger's contract only lasts until book 9, but she can always renew it, so this may not be the last book in the series.
  • Shannon Messenger hinted in an interview that she didn't think she'd be able to wrap up the series in only one more book, so there most likely will be a Book 10, although no official contract had been drawn up. So, it looks like book 10 might be the last book in the series. [3]
  • Book 9 will most likely come out sometime in November 2021. [1]
  • Jason Chan will be creating the cover art, as he has in the previous books.
  • Shannon Messenger announced Unlocked on February 19, 2020.
  • This book might take Shannon Messenger longer to write than the other books, since she now has a baby to take care of. [4]
  • The title of the book will most likely come out sometime on May 2021.


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