Peter is thrilled to join his parents on an expedition to Greenland. But when they finally reach the ice cap, he struggles to understand a series of frightening yet enticing visions.

Thea has never seen the sun. Her extraordinary people, suspected of witchcraft and nearly driven to extinction, have retreated to a secret world they've built deep inside the arctic ice.

As Thea dreams of a path to Earth's...

This Newbery Medal winner that has a fantastic puzzle at its heart has been called "smart and mesmerizing," (The New York Times), "superb" (The Wall Street Journal), and "incandescent" (The Washington Post).

When Miranda starts receiving mysterious notes, she doesn't know what to do.

The notes tell her that she must write a letter, a true story, and that she can't share her mission with anyone--not even her best friend, Sal.

It would be easy to ignore the strange messages, except that whoever is leaving them has an uncanny ability to predict the...

This Newbery Medal winner that has a fantastic puzzle at its heart has been called "smart and mesmerizing," (The New York Times), "superb" (The Wall Street Journal), and "incandescent" (The Washington Post).

When Miranda starts receiving mysterious notes, she doesn't know what to do.

The notes tell her that she must write a letter, a true story, and that she can't share her mission with anyone--not even her best friend, Sal.

It would be easy to ignore the strange messages, except that whoever is leaving them has an uncanny ability to predict the...

The instant New York Times bestseller from the author of the Newbery Medal winner When You Reach Me a story about spies, games, and friendship.

The first day Georges (the S is silent) moves into a new Brooklyn apartment, he sees a sign taped to a door in the basement: SPY CLUB MEETING--TODAY

That's how he meets his twelve-year-old neigh-bor Safer. He and Georges quickly become allies--and fellow spies. Their assignment? Tracking the mysterious Mr. X, who lives in the apartment upstairs. But as Safer's requests become more and more demanding, Georges starts to...

Long ago, best friends Bridge, Emily, and Tab made a pact: no fighting. But it's the start of seventh grade, and everything is changing. Emily's new curves are attracting attention, and Tab is suddenly a member of the Human Rights Club. And then there's Bridge. She's started wearing cat ears and is the only one who's still tempted to draw funny cartoons on her homework.

It's also the...