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.

    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.

    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.

    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?

    Twelve-year-old Olympia is an artist—and in her neighborhood, that's normal. Her dad and his business partner Apollo bring antique paintings back to life, while her mother makes intricate sculptures in a corner of their loft, leaving Ollie to roam the streets of New York with her best friends Richard and Alex, drawing everything that catches her eye.Then everything falls apart. Ollie's dad disappears in the middle of the night, leaving her only a cryptic note and instructions to destroy it. Her mom has gone to bed, and she's not getting up. Apollo is hiding something, Alex is acting strange, and Richard has questions about the mysterious stranger he saw outside. And someone keeps calling, looking for a missing piece of art. . . .Olympia knows her dad is the key--but first, she has to find him, and time is running out.

    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.

    The castle is a temporary boarding school for children escaping the Blitz, but soon it’s clear there is something terribly wrong. There are clues hinting that a spy is in the house, and there are undeniable signs of a sinister magic. When the children in the castle’s temporary boarding school begin disappearing one by one, it’s a race against the clock for twelve-year-old Kat Bateson, her two younger siblings, and their new best friend.

    They have started over, carving out a new life in the unforgiving terrain of Echo Mountain. Though her sister Esther, especially, resents everything about the mountain, Ellie has found more freedom, a new strength, and a love of the natural world that now surrounds them. But there is little joy, even for Ellie, as they all struggle with the sorrow and aftermath of an accident that left her father in a coma. An accident for which Ellie has accepted the unearned weight of blame.Urgent for a cure to bring her father back, Ellie is determined to try anything. Following her heart, and the lead of a scruffy mutt, Ellie will make her way to the top of the mountain, in search of the healing secrets of a woman known only as "the hag." But the mountain still has many untold stories left to reveal to Ellie, as she finds her way forward among a complex constellation of strong women spanning generations.

    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.

    At first he is thrilled with his new treasure, but as one secret leads to another, Reuben finds himself torn between his innately honest nature and the lure to be a hero.Now he is on a dangerous adventure--full of curious characters, treacherous traps, and hairsbreadth escapes--as he races to solve the mystery before it is too late. Even with fearless Penny, mighty Jack, and the wise Mrs. Genevieve on his side, can Reuben outwit and outmaneuver the sly villain called The Smoke and his devious defenders the Directions and save the city from a terrible fate?In this ingeniously crafted novel, acclaimed New York Times bestselling author Trenton Lee Stewart invites readers to join the adventure, decipher the clues, and ask themselves the question: Is knowing a secret a gift or a curse?

    Helmsley has grown up in a house full of oddities and treasures collected by his grandparents, the famous explorers. He knows every nook and cranny. He knows them all too well. After all, ever since his grandparents went missing on an iceberg, his mother barely lets him leave the house.Archer longs for adventure. Grand adventures, with parachutes and exotic sunsets and interesting characters. But how can he have an adventure when he can’t leave his house?It helps that he has friends like Adélaïde L. Belmont, who must have had many adventures to end up with a wooden leg. (Perhaps from a run-in with a crocodile. Perhaps not.) And Oliver Glub. Oliver will worry about all the details (so that Archer doesn’t have to).And so Archer, Adélaïde, and Oliver make a plan. A plan to get out of the house, out of their town entirely. It’s a good plan.Well, it’s not bad, anyway.But nothing goes quite as they expect.

    Right before his eyes, in a busy square in Marseille, a group of pickpockets pulls off an amazing robbery. As the young bandits appear to melt into the crowd, Charlie realizes with a start that he himself was one of their marks.Yet Charlie is less alarmed than intrigued. This is the most thrilling thing that’s happened to him since he came to France with his father, an American diplomat. So instead of reporting the thieves, Charlie defends one of their cannons, Amir, to the police, under one condition: he teach Charlie the tricks of the trade.What starts off as a lesson on pinches, kicks, and chumps soon turns into an invitation for Charlie to join the secret world of the whiz mob, an international band of child thieves who trained at the mysterious School of Seven Bells. The whiz mob are independent and incredibly skilled and make their own way in the world—they are everything Charlie yearns to be. But what at first seemed like a (relatively) harmless new pastime draws him into a dangerous adventure with global stakes greater than he could have ever imagined.

    A found cipher. A game begins . . . .Twelve-year-old Emily is on the move again. Her family is relocating to San Francisco, home of her literary idol: Garrison Griswold, creator of the online sensation Book Scavenger, a game where books are hidden all over the country and clues to find them are revealed through puzzles. But Emily soon learns that Griswold has been attacked and is in a coma, and no one knows anything about the epic new game he had been poised to launch. Then Emily and her new friend James discover an odd book, which they come to believe is from Griswold and leads to a valuable prize. But there are others on the hunt for this book, and Emily and James must race to solve the puzzles Griswold left behind before Griswold's attackers make them their next target.

    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.