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 his mother refuses to talk about and he can’t remember meeting. Then one morning Colin finds a shoebox on his porch with a note on top: “Your father wanted you to have this.” Inside the box is a key. This new clue makes Colin even more determined to find out the truth about his dad and why his parents split up when he was a baby. Colin and Nevaeh begin investigating Colin’s father in a quest that takes them from eerie storage units to lock-lined bridges to, strangely, secrets in Nevaeh’s family. But the closer they get to connecting the clues, the more trouble awaits them. A serious accident leaves Nevaeh’s family reeling—and Nevaeh racked with guilt. And digging into Colin’s father’s past may lead Colin and his mom into even more danger. Can Colin and Nevaeh solve the mystery before it's too late?

Liza, Bill, and Jed Roberts unravel a series of coded clues that solve a family mystery while spending the summer on their grandparents' farm. Reissue.

Though Thorne Smith's most popular works involve elements of fantasy and science fiction, the clever novel Turnabout takes his penchant for incorporating supernatural and magical themes in his work and puts one such plot twist to use as a comedic tool. An ancient Egyptian idol grows weary of the seemingly never-ending spats between the Willows, a young married couple, and forces them to switch bodies. As you might expect, hilarious hijinks ensue.

In this page-turning middle grade series by New York Times bestseller Margaret Peterson Haddix, Colin and Nevaeh, whose parents own rival junk-removal businesses, uncover mysteries hidden in attics and basements and discover how trash can become treasure. In The Secret Letters, Colin and Nevaeh find vintage letters that lead to interlocking mysteries from the 1970s and '80s, and they learn about "women's lib," the ERA, and other social issues from that time in history--and the way echoes from that era affect Colin and Nevaeh themselves. When Colin finds a shoebox full of letters hidden in a stranger's attic, he knows he's supposed to throw them away. That's his summer job, getting rid of junk. But Colin wants to rescue the letters--and find out what really happened to best friends Rosemary and Toby way back in the 1970s. Meanwhile, across town, Nevaeh also finds a mysterious letter. But this one reads like a confession to a crime. And Nevaeh knows her father, the "Junk King," expects her to join the rest of the family in blaming a single suspect: his business rival, Colin's mom. But that's not what Nevaeh wants, either. Even as one set of letters bring Colin and Nevaeh together, the one Nevaeh found threatens to tear them apart. Is their new friendship as doomed as Rosemary and Toby's? Each book in the Mysteries of Trash and Treasure series will examine a different time period in history and make readers think about how we value the stuff we hold on to--and what it is that makes it valuable.

They must unlock the mystery—before time runs out. Unwrapping a puzzling package and finding a clue launches twelve-year-old cousins Sophie and Jessica into the dangers of The Treasure Key. They're soon racing against time—and bad guys— to find long-lost treasure. Will they be the first to discover its hiding place? The Treasure Key is the second book in the fun and fast-paced mystery series for kids. Buy The Treasure Key and begin your search today.

Cecelia looks like a peasant girl and lives in a village so small that it's not even on the map. But she knows that secretly, she is the true princess, hidden away as a baby to be kept safe from the enemies of the kingdon. A commoner named Desmia was placed on the throne as a decoy. Cecelia has always known that when it was safe, she would be taken out of hiding and returned to her rightful place on the throne. Then danger finds her in her village, and Cecelia has to act. With the help of her best friend Harper, she decides to take matters into her own hands, relieve Desmia of the the crown, and take up her own rule. But when they venture from their small village to the capital city and into the famed Palace of Mirrors, Harper and Cecelia discover that all is not as it seems, and that they have placed themselves in more danger than ever before.

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 have been inseparable. Until the summer after fifth grade, when Josie disappears, leaving only a note, and whispering something about “whatnot rules.” But why would Max ever think that Josie wasn’t real? And what are whatnots? As Max sets to uncover what happened to Josie—and what she is or isn’t—little does he know that she’s fighting to find him again, too. But there are forces trying to keep Max and Josie from ever seeing each other again. Because Josie wasn’t supposed to be real. This middle grade thriller from Margaret Peterson Haddix delves into the power of privilege, the importance of true friendship, and the question of humanity and identity. Because when anyone could be a whatnot, what makes a person a real friend—or real at all?