Connecticut middle-schooler Jake and his older sister Kady are transported by a Mayan artifact to a strange world inhabited by a mix of people from long-lost civilizations who are threatened by prehistoric creatures and an evil alchemist, the Skull King.

Kadija is the music-loving daughter of a guardian of the library in the ancient city of Timbuktu, Ali is a former shepherd boy, trained by Islamist militants--and both are caught up in the war in Mali and on opposite sides of the stuggle to save the sacred Sufi manuscripts that the militants want to destroy.

When Nic, a slave in the mines outside of Rome, is forced to enter a sealed cavern containing lost treasures of Julius Caesar, he finds himself in possession of an ancient amulet filled with magic once reserved for the Gods, and becomes the center of a conspiracy to overthrow the emperor and destroy Rome.

Cass and her brother Wilbur scavenge in the ruins of a future London seeking an artifact for their Russian masters, but the search takes on a new urgency after the arrival of Erin and Peyto, strangers from afar who claim to hold the key to locating the mysterious object.

Journeying to the ancient city of Babylon when Bhegad tracks down Marco, the companions face a daunting choice involving a dire trap and a long-lost figure from Jack's past.

Sam (a puzzle master) and Martina (a history whiz) become involved in a dangerous quest to find seven keys left behind by Benjamin Franklin and a secret society of descendants, which, when gathered together, unlock a powerful weapon, so the middle schoolers must solve the puzzles, find the artifacts before the bad guy does, and save the nation.

Scholarly eighteen-year-old Paula and her merchant father journey from Transylvania to Istanbul to buy an ancient pagan artifact rumored to be charmed, but others, including a handsome Portuguese pirate and an envoy from the magical Wildwood, want to acquire the item, as well.

Traveling to Brazil to locate a rare crystal treasure being guarded by a native tribe in the Amazon jungle, Geronimo Stilton and his friends navigate a treacherous route filled with crocodiles, giant rats and, piranhas.

"Wade, Lily, Darrell, and Becca fly from Texas to Germany for the funeral of an old family friend. But instead of just paying their respects, they wind up on a dangerous, mind-blowing quest to unlock an ancient, guarded secret that could destroy the fate of the world"--

Chelo Holmes y su inteligente ayudante Huan Shon tienen nuevo caso que investigar. Esta vez han de trasladarse a Egipto para poder resolverlo. Allí es donde ha desaparecido el ayudante del sabio Fenron en lo que parece un gran descubrimiento arqueológico, pero a la vez muy peligroso. Chelo Holmes and his intelligent assistant Huan Shon have a new case to investigate. This time they have to move to Egypt to be able to solve it. This is where the...