When Daisy Wells and Hazel Wong set up a secret detective agency at Deepdean School for Girls, they struggle to find a truly exciting mystery to investigate. (Unless you count the case of Lavinia's missing tie. Which they don't.)But then Hazel discovers the body of the Science Mistress, Miss Bell - but when she and Daisy return five minutes later, the body has disappeared. Now the girls have to solve a murder, and prove a murder has happened in the first place before the killer strikes again (and before the police can get there first, naturally),But will they succeed? And can their friendship stand the test?

    True, there were no other recorded female survivors from the shipwreck which left baby Sophie floating in the English Channel in a cello case, but Sophie remembers seeing her mother wave for help. Her guardian tells her it is almost impossible that her mother is still alive, but that means still possible. You should never ignore a possible. So when the Welfare Agency writes to her guardian threatening to send Sophie to an orphanage, she takes matters into her own hands and flees to Paris to look for her mother, starting with the only clue she has - the address of the cello maker. Evading the French authorities, she meets Matteo and his network of rooftoppers - urchins who live in the sky. Together they scour the city for Sophie's mother before she is caught and sent back to London, and most importantly before she loses hope.

    But when a fourth child, Max, a knife-thrower, joins the group, it sets off an unforgettable chain of events. When the museum’s Amazonian shrunken head is stolen, the four are determined to get it back. But their search leads them to a series of murders and an explosive secret about their pasts. This sensational new series combines the unparalleled storytelling gifts of Lauren Oliver with the rich knowledge of the notorious relics collector H.C. Chester. What you will NOT find in this book:– An accountant named Seymour– A never-ending line at the post office– Brussel sprouts (shudder)– A lecture on finishing all your homework on time– A sweet, gooey story for nice little girls and boys.

    When Fiona’s family moves to be closer to her older sister’s figure skating club—and far from Fiona’s close-knit group of friends—nobody seems to notice Fiona’s unhappiness. Alone and out of place, Fiona ventures to the town’s library, a rambling mansion donated to the town by the long-dead heiress. And there she finds a gripping mystery novel about a small town, family secrets, and a tragic disappearance. Soon Fiona begins to notice strange similarities that blur the lines between the novel and her new town. And when she looks for the book again, it’s gone. Almost like it never existed. With stubbornness and a little help from a few odd Lost Lake locals, Fiona uncovers the book’s strange history. It’s not a novel, but the true story of an unsolved century-old crime filled with clues to the mystery. Lost Lake is a town of restless spirits, and Fiona will learn that both help and danger come from unexpected places—maybe even the sister she thinks doesn’t care about her anymore.

    With time running out, Christopher must use every skill he’s learned to discover the key to a terrible secret with the power to tear the world apart.

    Chess has always been the protector over his younger siblings, Emma loves math, and Finn does what Finn does best—acting silly and being adored. They’ve been a happy family, just the three of them and their mom.But everything changes when reports of three kidnapped children reach the Greystone kids, and they’re shocked by the startling similarities between themselves and these complete strangers. The other kids share their same first and middle names. They’re the same ages. They even have identical birthdays. Who, exactly, are these strangers?Before Chess, Emma, and Finn can question their mom about it, she takes off on a sudden work trip and leaves them in the care of Ms. Morales and her daughter, Natalie. But puzzling clues left behind lead to complex codes, hidden rooms, and a dangerous secret that will turn their world upside down.

    Will she discover the link between her family’s literary legacy and Shakespeare’s tomb before it’s too late? Antique paintings, secret passages, locked mausoleums, a four-hundred-year-old treasure, and a cast of quirky (and some ignoble) characters all add up to a fun original adventure. Readers will revel in a whirlwind journey through literary time and space in real-world locales from Mont St. Michel to Stratford-Upon-Avon to Central Park!

    L. Konisburg, this middle-grade mystery adventure is inspired by the real life of Viviani Joffre Fedeler, born and raised in the New York Public Library.Eleven-year-old Viviani Fedeler has spent her whole life in the New York Public Library. She knows every room by heart, except the ones her father keeps locked. When Viviani becomes convinced that the library is haunted, new girl Merit Mubarak makes fun of her. So Viviani decides to play a harmless little prank, roping her older brothers and best friend Eva to help out.But what begins as a joke quickly gets out of hand, and soon Viviani and her friends have to solve two big mysteries: Is the Library truly haunted? And what happened to the expensive new stamp collection? It's up to Viviani, Eva, and Merit (reluctantly) to findout.

    She doesn't have a friend in the world, except her pet mouse, Pemberley, with whom she shares her dingy attic bedroom.Then, on the heels of a rather devastating announcement made by her mother and father, Tabitha receives a mysterious invitation to the country estate of the wealthy but reclusive Countess of Windermere, whose mansion is rumored to be haunted. There, she finds herself among five other children, none of them sure why they've been summoned. But soon, a very big secret will be revealed— a secret that will change their lives forever and put Tabitha’s investigative skills to the test.

    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.

    The creaky smuggler’s inn is always quiet during this season, and twelve-year-old Milo, the innkeepers’ adopted son, plans to spend his holidays relaxing. But on the first icy night of vacation, out of nowhere, the guest bell rings. Then rings again. And again. Soon Milo’s home is bursting with odd, secretive guests, each one bearing a strange story that is somehow connected to the rambling old house. As objects go missing and tempers flare, Milo and Meddy, the cook’s daughter, must decipher clues and untangle the web of deepening mysteries to discover the truth about Greenglass House—and themselves.

    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.

    Soon their house is ransacked by unknown intruders, and a very strange policeman turns up on the scene, determined to apprehend them . . . with a toilet brush. Ivy and Seb make their escape only to find themselves in a completely uncommon world, a secret underground city called Lundinor where ordinary objects have amazing powers. There are belts that enable the wearer to fly, yo-yos that turn into weapons, buttons with healing properties, and other enchanted objects capable of very unusual feats. But the forces of evil are closing in fast, and when Ivy and Seb learn that their family is connected to one of the greatest uncommon treasures of all time, they must race to unearth the treasure and get to the bottom of a family secret . . . before it’s too late.

    But right before she leaves, a mysterious box arrives full of medallions and a note reading: These belonged to your father. Just as she's settling into life at Wellsworth, Emmy begins to find the strange symbols from the medallions etched into the walls and stumbles upon the school's super-secret society, The Order of Black Hollow Lane. As Emmy and her friends delve deeper into the mysteries of The Order, she can't help but wonder—did this secret society have something to do with her dad's disappearance?

    Etheldreda's from attempting to hide the death of their headmistress in this rollicking farce. The students of St. Etheldreda's School for Girls face a bothersome dilemma. Their irascible headmistress, Mrs. Plackett, and her surly brother, Mr. Godding, have been most inconveniently poisoned at Sunday dinner. Now the school will almost certainly be closed and the girls sent home—unless these seven very proper young ladies can hide the murders and convince their neighbors that nothing is wrong. The Scandalous Sisterhood of Prickwillow Place is a smart, hilarious Victorian romp, full of outrageous plot twists, mistaken identities, and mysterious happenings.