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Before Julia Stoner died, she heard a strange whistle. Now her sister Helen has started to hear the same sound. Can our celebrated sleuth solve the mystery before Helen suffers the same fate as her sister? The game is afoot!

祝20巻！ジュニア文庫No.1シリーズ！ペンギン探偵の助手アリスは不思議な指輪の力で『鏡の国』に入れる、ちょっと変わった女の子。鏡の国はゆっくーり時間が流れているから、忘れていた宿題を考えようと鏡の国に入ったアリス。だけど中では、白ウサギが慌てていた！　理由をきいてみると、鏡の国の時間を操れる時計が盗まれてしまったらしい。

A famous writer is coming to Green Lawn! Dink rushes to the bookstore to meet his favorite author, Wallis Wallace, and get all his books signed. But the author never shows up! Where is Wallis Wallace? It’s up to Dink and his friends Josh and Ruth Rose to track him down.

"Are you a gifted child looking for special opportunities?" Dozens of children respond to this peculiar ad in the newspaper and are then put through a series of mind-bending tests, which readers take along with them. Only four children—two boys and two girls—succeed. Their challenge: to go on a secret mission that only the most intelligent and inventive children could complete. To accomplish it they will have to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.

Join the Mysterious Benedict Society as Reynie, Kate, Sticky, and Constance embark on a daring new adventure that threatens to force them apart from their families, friends, and even each other. When an unexplained blackout engulfs Stonetown, the foursome must unravel clues relating to a nefarious new plot, while their search for answers brings them closer to danger than ever before.

These are just some of the 10 brain-twisting mysteries that Encyclopedia Brown must solve by using his famous computerlike brain. Try to crack the cases along with him!

Hei, anak kecil, dengarkan baik-baik. Aku tahu kamu menyimpan ransel biru ajaib. Kamu harus memberikan ransel itu kepadaku. Temui aku besok di taman kompleks. Aku menunggumu di sana," ujar suara itu datar. Setelah menggunakan ransel biru, hidup Odie berubah. Ia menjumpai pengalaman baru yang membuatnya takjub. Ransel biru menyimpan banyak rahasia. Tapi, bagaimana rahasia itu bisa diketahui Matha Elang dan Cullun? Apa hubungannya dengan Gaek Uduy, kakek Odie?

When Daisy Wells and Hazel Wong set up their very own secret detective agency at Deepdean School for Girls, they struggle to find any truly exciting mysteries to investigate. (Unless you count the case of Lavinia's missing tie. Which they don't.) Then Hazel discovers the Science Mistress, Miss Bell, lying dead in the Gym. She assumes it was a terrible accident - but when she and Daisy return five minutes later, the body has disappeared. Now Hazel and Daisy not only have a murder to solve: they have to prove one happened in the first place.

Something weird is going on! First the school bus gets a flat tire, and then Mrs. Kormel is totally lost in the middle of nowhere! Mrs. Kormel is the weirdest bus driver in the history of the world, and she's driving everyone crazy!

In the small city of Strattenburg, there are many lawyers, and though he’s only 13 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.

The New York Times best selling cartoonist behind the nationally acclaimed comic strip Pearls Before Swine, Stephan Pastis has won raves for Timmy Failure, the hilarious first book in a new series for young listeners. With the help of a polar bear named Total, Timmy Failure hopes to strike it rich by running the best detective agency around. The only problem is that our supremely confident hero is often more bumbling than brainy.

It’s the summer of 2007, and Mookie Hooper returns to Camp Cartwright with a huge secret: This is going to be her final summer at camp. So this has to be her best summer yet! Without anything to investigate, this is finally Mookie’s time to be a camper. She’s going to spend time with her buddy Carter Ruben-Rubens, finally make it into the inside of an inside joke with Fanny and her bunk, and possibly attempt a contact sport. The only thing that would put the summer over the top? Getting her first kiss. But that seems fairly unlikely since Squirrel Girl isn’t exactly anyone’s first crush.

桃花ちゃんはある日、亡くなったママと一緒にいた時の夢を見ました。ママとした約束を思いだした桃花ちゃんは、パパに「犬がほしい」と言ってみるのですが、「もうすぐ弟妹が生まれるから」と断られてしまいます。そう、桃花ちゃんには新しいママがいて、もうすぐ弟妹が生まれるのです。どうしても犬がほしい桃花ちゃんでしたが、ある日公園で遊んでいるときに、大きくて真っ白な毛並みの犬が現れて……！

옆집에 누가 이사를 왔군요. 분명 이사를 왔는데, 누가 살고 있는 것 같은데 꼬꼬닭은 이상하게 통 얼굴을 볼 수 없었어요. 점차 옆집에 이사 온 이를 의심하게 되고, 외출할 때는 자물쇠로 현관문을 채우고 다니는군요. 도대체 옆집에는 누가 살고 있을까요? 꼬꼬닭이 생각한 계획들을 살짝 공개합니다.

Who is Geronimo Stilton? That's me! I run a newspaper, but my true passion is writing adventure stories. Here in New Mouse City, the capital of Mouse Island, my books are all best sellers! My stories are funny, fa-mouse-ly funny. They are whisker-licking-good tales, and that's a promise.

With SPYDER defeated, Ben Ripley is looking forward to his life getting back to normal, or as normal as possible when you’re a superspy in training. Until someone bombs the CIA conference room next door. To Ben’s astonishment, the attacker is none other than Erica Hale, the spy-in-training he respects more than any other.

Join Nate the Great and his trusty companion, Sludge, in solving the greatest mysteries a boy could search for. In this collection, Nate hunts down a lost grocery list, a favorite stamp, a genius pet, a beach bag, a yucky valentine, second base, and an evil, book-destroying monster.

Ben Ripley may only be in middle school, but he's already pegged his dream job: CIA or bust. Unfortunately for him, his personality doesn't exactly scream "secret agent". In fact Ben is so awkward, he can barely get to school and back without a mishap. Because of his innate nerdiness, Ben is not surprised when he is recruited for a magnet school with a focus on science - but he's entirely shocked to discover that the school is actually a front for a junior CIA academy.

Reggie Armitage the III has found a box with a list of codes and a golden skeleton key - but he has no idea what the key opens or how to crack the code. It's a good thing second-grade sleuths, Jigsaw Jones and Mila Yeh, are investigating The Case of the Golden Key.

My troublemaker cousin was trapped in Transratania! And before I could even squeak, my sister, Thea, dragged me along on her rescue mission. Little did we know that Transratania is the land of vampire bats! Holey cheese, bats give me goose bumps!