There are 3 books in the Gwendy's Button Box Trilogy series. The newest book is Gwendy's Final Task which came out in 2022.

1
Gwendy's Button Box

By Stephen King , Richard Chizmar ,

Book cover of Gwendy's Button Box

'A resonant novella set in one of King's signature locales: the small town of Castle Rock, Maine' Washington Post

The small town of CASTLE ROCK, MAINE has witnessed some strange events and unusual visitors over the years, but there is one story that has never been told...until now.

There are…

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2
Gwendy's Magic Feather

Book cover of Gwendy's Magic Feather

A CASTLE ROCK NOVEL WITH A FOREWORD BY STEPHEN KING

PREPARE TO RETURN AGAIN TO STEPHEN KING'S CASTLE ROCK, THE SLEEPY LITTLE TOWN BUILT ON A BEDROCK OF DEEP, DARK SECRETS, JUST AS IT'S ABOUT TO AWAKEN FROM ITS QUIET SLUMBER ONCE MORE.

Something evil has swept into the small…

3
Gwendy's Final Task

By Stephen King , Richard Chizmar ,

Book cover of Gwendy's Final Task

King and Chizmar join forces again with a powerful stand-alone novel that is also the final chapter in the Gwendy trilogy.

When Gwendy Peterson was twelve, a stranger named Richard Farris gave her a mysterious box for safekeeping. It offered treats and vintage coins, but it was dangerous. Pushing any…