Greystone Secrets #3: The Messengers

In the dazzling conclusion to the Greystone Secrets series from New York Times bestselling author Margaret Peterson Haddix, the Greystones and their doubles, the Gustanos, must team up to save the alternate world?before both worlds are lost. All secrets are revealed in this page-turning, suspenseful story that shows the importance of teamwork, telling your story, and taking action when it matters most.

As book three of the Greystone Secrets series opens, the Greystone kids have their mother back from the evil alternate world, and so does their friend Natalie. But no one believes the danger is past.

Then mysterious coins begin falling from unexpected places. They are inscribed with codes that look just like what the Greystones' father was working on before he died. And with the right touch, those symbols transform into words: PLEASE LISTEN. And FIND US, SEE US, HELP US. . . .

The coins are messengers, telling the Greystones and their allies that their friends in the alternate world are under attack?and that the cruel, mind-controlling forces are now invading the better world, too.

After another spinning, sliding journey across worlds, the Greystone kids must solve mysteries that have haunted them since the beginning: what happened when the Gustanos were kidnapped, what created the alternate world, and how a group of mismatched kids can triumph once and for all against an evil force that seems to have total control.

The Greystone kids and their allies are the only hope for two worlds. But can they succeed when the enemy has the ultimate weapon: mind control?

• Doubles and Doppelgängers: The Greystone kids must team up with their doubles, the Gustanos, on a dangerous quest where telling friend from foe is harder than ever.
• A Coded Mystery: Mysterious coins hold the key, etched with messages linked to their father's secret work. Can Emma crack them in time?
• Found Family: This thrilling series conclusion celebrates the power of teamwork as a group of mismatched kids and their allies form an unbreakable bond to fight evil.
• Kids Save the Day: Facing down a powerful enemy, the Greystone siblings must find the courage to save not one world, but two, in a page-turning finale.