Margaret Peterson Haddix

The explosive finale to the #1 bestselling series! Fourteen-year-old Amy Cahill and her younger brother, Dan, have had enough. Not only do they have to find the 39 Clues first, they're expected to reunite their backstabbing family - the same people who killed their parents. But Amy and Dan haven't survived explosions and assassination attempts for nothing. They have a plan to finish the Clue hutn on their own terms. Too bad there's a final, fatal...

Twelve-year-old Zola, who has a surprising connection to Jessie, discovers that she is stuck in a fake utopian future, and that those around her are counting on her to help them escape.

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.

In a future where the law limits a family to only two children, third-born Luke has been in hiding for the entire twelve years of his life, until he enters boarding school under an assumed name and is forced to face his fears.

In a future world of false identities, government lies, and death threats, Luke feels drawn to the younger brother of the boy whose name Luke has taken.

In a society that allows families to have only two children, a group of third-borns tries to save themselves and others like them.

Eleven-year-old Marin and her neighbor Charley hope that by preventing a disaster that occurred twenty years ago, they can save Charley's dad from a future of guilt and self-destructive behavior.

From master of suspense author Margaret Peterson Haddix comes another page-turning stand-alone adventure perfect for fans of Cog and Bad Magic. No matter what anyone tells you, I'm real. That's what the note says that Max finds under his keyboard. He knows that his best friend, Josie, wrote it. He'd know her handwriting anywhere. But why she wrote it-and what it means-remains a mystery. Ever since they met in kindergarten, Max and Josie has been inseparable....

New York Times bestselling author Margaret Peterson Haddix delivers the thrilling conclusion to her middle grade Mysteries of Trash and Treasure series as Colin and Nevaeh unravel their most personal mystery yet. Colin has spent all summer solving mysteries with his friend Nevaeh. But they've only ever dealt with other people's mysteries—ones that are safe for Colin to think about. He's still stuck on the mystery surrounding his own father, who...

Twelve-year-old twins Nick and Eryn and their robot stepsiblings, Jackson and Ava, try to save humanity from killer robots.