<p><strong>The second book in the Greystone Secrets series from the master of plot twists, Margaret Peterson Haddix—perfect for fans of <em>A Wrinkle in Time</em> and <em>The City of Ember, </em>now available in paperback!</strong></p><p>Until their mother vanished, the Greystone kids—Chess, Emma, and Finn—knew nothing about the other world.</p><p>Everything is different there. It’s a mirror image, except things are wrong. <em>Evil</em>. Their mother tried to fix it, but she and an ally got trapped there along with Ms. Morales, their friend Natalie’s mom.</p><p>Now the four kids—brave Chess, smart Emma, kind Finn, and savvy Natalie—are determined to rescue everyone.</p><p>To do so, they have to go back: into the other world, where even telling the truth can be illegal.</p><p>But in such a terrifying place, Chess doubts he can ever be brave enough. Despite all her brains, Emma can’t seem to break the code. With everything spiraling out of