Caity Mac Fireland of San Francisco accompanies her parents to an isle off the coast of Scotland where she finds a Mayan relic and, guided by a motley crew of advisors, uncovers an incredible secret that an elite group of power-brokers will stop at nothing to control.

When Connecticut middle-schooler Jake and his older sister Kady are transported back to Pangaea, the strange world of lost civilizations, they must find the truth behind the mythic Fire Opal Eye in order to survive.

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.

Seventeen-year-old Agnes Wilkins is about to make her debut into 1815 London society at a lavish party, where she meets Lord Showalter, a wealthy and eligible man who collects Egyptian antiquities and who is hiding a dangerous secret.

Twelve-year-olds Alex and Renata are on the run from the Order, which is on the brink of creating an army of indestructible stone warriors to carry out their evil schemes, and only the Lost Spells which his mother used to bring Alex back to life can stop them--and undoing the powerful magic that created the chaos that is now loose in Egypt might very well kill him.

After twelve-year-old Addison Cooke's uncle unearths ancient Incan secrets in Peru, he is kidnapped by a shadowy organization intent on stealing the treasure unless Addison and his friends can decipher the clues first.

In Glacier National Park, middle school geniuses Sam, Martina, and Theo follow clues related to Thomas Jefferson as they tackle a new round of puzzles, riddles, and traps to find the next key left behind by the Founding Fathers, but Gideon Arnold, descendant of the infamous Benedict Arnold, is hot on their trail.

Catwoman creates the perfect diversion at a cat show, while plotting to steal from the art museum an ancient Egyptian necklace that is supposed to give the person wearing it nine lives, and it is up to Batman and Robin to prevent the crime. Includes profile of Catwoman, glossary, discussion questions, and writing prompts.

Jack Buckles is on trial for his life. The Ministries of Secrets and Guilds, led by Ignatius Gall, are conspiring to put the Ministry of Trackers down for good--starting with Jack's very existence as a Section 13. His only hope is to prove that Gall is the real danger, not him, and it leads Jack and Gwen from the back streets of London, through the Austrian Alps, to the great reaches of central China. Joined by their new friend Liu Fai, Jack and Gwen...

On a class field trip, Henry hopes to dig up a dinosaur bone with his lucky shovel.