When Christopher Rowe's code-breaking uncovers the true target of an assassination attempt, he and his friends are odered to Paris to investigate a centuries-old curse on the French throne.

An adventure on the wide open ocean, and Ruby is all at sea. Can she crack the case while evading the clutches of the evil Count von Viscount? Well, you wouldn't want to bet against her.

"Hailey Gordon is looking to make some fast cash to help pay her tuition when she's caught counting cards at the Encore casino in Boston. She grabs her winnings and makes her escape. With guards closing in, she dives into an unlocked room to hide...only to find a dead body. Recently released from prison, Nick Patterson hasn't felt hope in a long time, but the job he "inherited" in prison promises to change that. He enters hotel room 633 to find that...

Fifteen-year-old Matt and his new friend Robin search the globe to retrieve an ancient code--rumored to have brought down the ancient civilization of Atlantis--from the hands of a madman who is bent on destroying the modern world.

Winston and his friends enter an all-day puzzle contest to win fifty-thousand dollars for their school, but they must also figure out who is trying to keep them from winning. Puzzles for the reader to solve are included throughout the text.

When Stephanie Lewis finds secret writing in the margin of an old book in the library, The Math Kids have a new puzzle to solve. But first, they must learn about codes and ciphers and how they can use their math skills to solve them. As one clue leads to another, the kids are drawn into the mysterious old house that overlooks the town. Is it really haunted like some townspeople say? And who is the man with the long beard who keeps showing up everywhere...

“Save this one for a weekend when you won’t have to stop reading.”—The Globe and Mail
A teenage runaway’s body is found in the basement of a rancid tenement building in the desolate, dangerous North Philly district dubbed the Badlands. The inexplicable cause of death: drowning. Months later, this dormant homicide case stirs back to life. A confession to the bizarre murder sends Philadelphia police detectives...

When a new book arrives at the library with a secret code written inside, Derek, with the help of his friends, follows the clues from one novel to the next and makes a discovery that may help him get past a terrible loss.

"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 bestsellers! My stories are funny, fa-mouse-ly funny. They are whisker-licking good tales, and that's a promise! The Mona Mouse code: Do you like solving mysteries? I do! So when my sister, Thea, heard that there was a secret hidden in Mouse Island's most famouse painting, the...

"¿Qué pasaría si descubrieras que tu familia es una de las más poderosas de toda del historia de la humanidad? ¿Y si te dijeran que la fuente de poder de la familia está escondida por todo el mundo en forma de 39 pistas? ¿Y si, además, te dieran a elegir entre tener un millón de dolares... o conseguir la primera de las pistas? Si fueras Amy y Dan Cahill, ¡escogerías la pista y emperazarías una carrera muy peligrosa!" --From publisher's...