Keeper of the Lost Cities Collection Books 6-9 (Boxed Set): Nightfall; Flashback; Legacy; Unlocked Book 8.5; Stellarlune -- Shannon Messenger, Paperback

Books six through nine, including Unlocked Book 8.5, of the New York Times and USA TODAY bestselling Keeper of the Lost Cities series are now available together in a collectible paperback boxed set!

Sophie Foster is struggling. Grieving. Scrambling. But she knows one thing: she will not be defeated.

The Neverseen have had their victories--but the battle is far from over. It's time to change tactics. Make sacrifices. Reexamine everything. Maybe even time for Sophie to trust her enemies.

All paths lead to Nightfall--an ominous door to an even more ominous place--and Sophie and her friends strike a dangerous bargain to get there. But nothing can prepare them for what they discover.

Sophie must face down ruthless enemies, uncover secrets of her past, and discover the true meaning of power...and evil.

Unlocked Book 8.5 offers alternating perspectives from Sophie and Keefe following the events of Legacy and includes a comprehensive guide to the world of the Lost Cities--plus fun bonuses like recipes, a map, illustrations, and more!

This astonishing paperback boxed set includes:
Nightfall
Flashback
Legacy
Unlocked Book 8.5
Stellarlune

Author: Shannon Messenger
Publisher: Aladdin Paperbacks
Published: 09/02/2025
Pages: 4112
Binding Type: Paperback
Size: 7.63h x 5.13w x 10.15d
ISBN: 9781665958196
Audience: Ages 9-12

About the Author
Shannon Messenger graduated from the USC School of Cinematic Arts, where she learned--among other things--that she liked watching movies much better than making them. She studied art, screenwriting, and television production but realized her real passion was writing for kids and teens. She's the internationally, New York Times, and USA TODAY bestselling author of the award-winning middle grade series Keeper of the Lost Cities, as well as the Sky Fall young adult series. Her books have been featured on multiple state reading lists, published in numerous countries, and translated into many languages. She lives in Southern California with her family and an embarrassing number of cats. Find her online at ShannonMessenger.com and @SW_Messenger on Instagram, X, and Facebook.