In fact, everything about Heidi and her mentally disabled mother's past is a mystery. When a strange word in her mother's vocabulary begins to haunt her, Heidi sets out on a cross-country journey in search of the secrets of her past.Far away from home, pieces of her puzzling history come together. But it isn't until she learns to accept not knowing that Heidi truly arrives.

    Fifty-seven years later, the enigmatic architects disappeared, leaving behind for the people of New York the Old York Cipher—a puzzle laid into the shining city they constructed, at the end of which was promised a treasure beyond all imagining. By the present day, however, the puzzle has never been solved, and the greatest mystery of the modern world is little more than a tourist attraction.Tess and Theo Biedermann and their friend Jaime Cruz live in a Morningstarr apartment house—until a real estate developer announces that the city has agreed to sell him the five remaining Morningstarr buildings. Their likely destruction means the end of a dream long-held by the people of New York. And if Tess, Theo and Jaime want to save their home, they have to prove that the Old York Cipher is real. Which means they have to solve it.

    This first one, "The Tower Mystery," introduced the action, mystery, and suspense themes. The boys continue to deliver thrills to this day.It all starts with the boys, Frank and Joe, on their motorcycles delivering important papers to a lawyer in Willowville for their father, Fenton Hardy. He's the well-known private investigator in Bayport. A reckless driver almost forces them over the embankment. It is not long before they find that their friend Chet's yellow jalopy has been stolen, possibly by the same red-haired driver! Stolen loot may be the issue. Later a dying criminal confesses that the loot has been stashed "in the tower" and the Hardy Boys make an astonishing discovery.

    Here, fourteen-year-old Janie meets a mysterious apothecary and his son, Benjamin Burrows—a fascinating boy who’s not afraid to stand up to authority and dreams of becoming a spy. When Benjamin’s father is kidnapped, Janie and Benjamin must uncover the secrets of the apothecary’s sacred book, the Pharmacopoeia, in order to find him, all while keeping it out of the hands of their enemies—Russian spies in possession of nuclear weapons. Discovering and testing potions they never believed could exist, Janie and Benjamin embark on a dangerous race to save the apothecary and prevent impending disaster.

    Basil E. Frankweiler meets Chasing Vermeer in this clever middle-grade debut.When Theodora Tenpenny spills a bottle of rubbing alcohol on her late grandfather’s painting, she discovers what seems to be an old Renaissance masterpiece underneath. That’s great news for Theo, who’s struggling to hang onto her family’s two-hundred-year-old townhouse and support her unstable mother on her grandfather’s legacy of $463. There’s just one problem: Theo’s grandfather was a security guard at the Metropolitan Museum of Art, and she worries the painting may be stolen.With the help of some unusual new friends, Theo’s search for answers takes her all around Manhattan, and introduces her to a side of the city—and her grandfather—that she never knew. To solve the mystery, she’ll have to abandon her hard-won self-reliance and build a community, one serendipitous friendship at a time.

    Isolated, awkward and a bit rude—but a genius. Mary Godwin, age fourteen, is a romantic. Adventurous, astute, and kind, Mary is to become Ada’s first true friend. And together, the girls conspire to form the Wollstonecraft Detective Agency—a secret constabulary for the apprehension of clever criminals. Their first case involves a stolen heirloom, a false confession, and an array of fishy suspects. But it’s no match for the deductive powers and bold hearts of Ada and Mary.   Mystery fans will love this tween girl riff on Sherlock Holmes and John Watson. History buffs will be delighted to see all the real figures who play a role in this story and appreciate the extensive backmatter that helps separate truth from fiction. Parents and educators hoping to promote the STEM fields for girls will be thrilled to have a series where two girls use math, science, and creative analytical thinking to solve crimes. But most espicially--emerging readers will love this series filled with humor, action, intrigue and wonderful artwork from Kelly Murphy.From the Hardcover edition.

    Sarcastic and bossy 13-year-old Primrose lives with her childlike, fortuneteller mother, and a framed picture is the only evidence of the father she never knew. Despite their differences, David and Primrose forge a tight yet tumultuous friendship, eventually helping each other deal with what is missing in their lives. This powerful, quirky novel about two very complicated, damaged children has much to say about friendship, loss, and recovery.

    . . and he’s only thirteen years oldMeet Theodore BooneIn the small city of Strattenburg, there are many lawyers, and though he’s only thirteen years old, Theo Boone thinks he’s one of them. Theo knows every judge, policeman, court clerk—and a lot about the law. He dreams of being a great trial lawyer, of a life in the courtroom.But Theo finds himself in court much sooner than expected. Because he knows so much—maybe too much—he is suddenly dragged into the middle of a sensational murder trial. A cold-blooded killer is about to go free, and only Theo knows the truth.The stakes are high, but Theo won’t stop until justice is served.Brimming with the intrigue and suspense that made John Grisham a #1 international bestseller and the undisputed master of the legal thriller, Theodore Boone: Kid Lawyer will keep readers guessing and pages turning.

    She's determined to communicate with spirits from the Other Side and become a crack investigator of spooky, twisted mysteries. After wrangling an invitation to visit relatives in San Francisco, Gilda discovers that her dreary, tight-lipped uncle and his strange, delicate daughter need her help to uncover the terrible family secret that has a tortured ghost stalking their home. From poignant to hair-raising and hilarious, this is a behind-the-scenes, tell-all account of the very first case in the illustrious career of Gilda Joyce, Psychic Investigator.

    Ages 9+.The 7th son of the 7th son, aptly named Septimus Heap, is stolen the night he is born by a midwife who pronounces him dead. That same night, the baby's father, Silas Heap, comes across a bundle in the snow containing a newborn girl with violet eyes. The Heaps take this helpless newborn into their home, name her Jenna, and raise her as their own. But who is this mysterious baby girl, and what really happened to their beloved son, Septimus?The first part of this enthralling new series leads readers on a fantastic journey filled with quirky characters, clever charms, potions and spells, and a yearning to uncover the mystery at the heart of this story...who is Septimus Heap? Angie Sage writes in the tradition of great British storytellers. Her inventive fantasy is filled with humor and heart: Magyk will have readers laughing and begging for more.

    It worked…but now the storerooms are almost out of food, crops are blighted, corruption is spreading through the city and worst of all—the lights are failing. Soon Ember could be engulfed by darkness…But when two children, Lina and Doon, discover fragments of an ancient parchment, they begin to wonder if there could be a way out of Ember. Can they decipher the words from long ago and find a new future for everyone? Will the people of Ember listen to them?

    The sun rises in a sky filled with dancing shapes; the wind, water, and trees shelter and protect those who live there; when the nine children go to sleep in their cabins, it is with full stomachs and joy in their hearts. And only one thing ever changes: on that day, each year, when a boat appears from the mist upon the ocean carrying one young child to join them—and taking the eldest one away, never to be seen again.Today’s Changing is no different. The boat arrives, taking away Jinny’s best friend, Deen, replacing him with a new little girl named Ess, and leaving Jinny as the new Elder. Jinny knows her responsibility now—to teach Ess everything she needs to know about the island, to keep things as they’ve always been. But will she be ready for the inevitable day when the boat will come back—and take her away forever from the only home she’s known?

    Anywhere bad weather strikes, they are not far behind. Chase is learning more on the road than he ever would just sitting in a classroom. But when the hurricane of the century hits, he will be tested in ways he never could have imagined.

    Join Joey and his sister Mary Alice as they spend nine unforgettable summers with the worst influence imaginable--their grandmother!

    Suddenly the sky peels away like fabric and from the gaping hole fall two curious-looking children. Peter Schock and Kate Dyer have fallen straight from the twenty-first century, thanks to an experiment with an antigravity machine. Before Gideon and the children have a chance to gather their wits, the Tar Man takes off with the machine -- and Kate and Peter's only chance of getting home. Soon Gideon, Kate, and Peter are swept into a journey through eighteenth-century London and form a bond that, they hope, will stand strong in the face of unfathomable treachery.