An eleven-year-old, bored with her life, imagines a more exciting one as a secret agent, but when she spends the summer on her aunt's farm, her stories become reality as she stumbles onto a real spy ring. (First in a series.)
When his father is arrested as a debtor in 1849 London, fourteen-year-old John Huffman must take on unexpected responsibilities, from asking a distant relative for help to determining why people are spying on him and his family.
High school sophomore Toby Klein enjoys computer hacking and wearing combat boots, so she thinks it is a joke when she is invited to join the cheerleading squad but soon learns cheering is just a cover for an elite group of government operatives known as the Squad. (First in a series.)
Despite the horrors of World War II, a French teenager pursues her dream of becoming an opera singer, which takes her to places where she gains information about what the Nazis are doing--information that the French Resistance needs.
Fourteen-year-old Nathan Fox is an actor in the same company as a young Will Shakespeare. But nothing can prepare him for the world he's about to enter at the request of England's spymaster general. (First in a series.)
As a sophomore at a secret spy school and the daughter of a former CIA operative, Cammie is sheltered from "normal teenage life" until she meets a local boy while on a class surveillance mission. (First in a series.)
In Boston in 1775, orphaned fourteen-year-old Hannah is indentured to the family of a British general and begins attending secret meetings disguised as a boy, then passing messages and warnings to the revolutionaries using her beloved horse Promise. Includes historical notes.
Resentful of having to go and live with their estranged father after the death of their mother, fifteen-year-old twins, Rich and Jade, soon find they have more complicated problems when their father is kidnapped and their attempts to rescue him involve them in an extremely dangerous international plot to control the world's oil.
During the Japanese occupation of parts of China, twelve-year-old Ye Xian is thrown out of her father's and stepmother's home, joins a martial arts group, and tries to help her aunt and the Americans in their struggle against the Japanese invaders.
The posthumous papers of Rebecca MacKenzie document her adventures, along with her brother Doug, in 1920s China as the teenaged siblings are sent to live aboard their uncle's ship where they become involved in the dangerous activities of a mysterious secret society called the Honourable Guild of Specialists. (First in a series.)
In 1774, twelve-year-old Jonah becomes a pupil of Nathan Hale, who inspires him to question his beliefs about the impending revolution, and two years later, Jonah makes a decision that leads to Nathan's execution.
In 1863, eleven-year-old Peg Kelly is drawn into the dangerous activities of a mysterious young woman who had come to her home in Missouri after fleeing the raid of William Quantrill and his raiders on Lawrence, Kansas. (Series.)
Thirteen-year-old Q and fifteen-year-old Angela expect their lives to become complicated when his mother and her father, wildly popular musicians, marry, but not that they will face spies and terrorists in Philadelphia, Pennsylvania. (First in a series.)
Vowing revenge when her parents are executed in 1553 by the Duke of Northumberland, teenaged Iris becomes a messenger, spy, and stand-in for Princess Elizabeth during the volatile political times surrounding Edward VI's death.
Fifteen-year-old Freedom Smith is a fighter, just like all of his relatives who have the "Hercules gene," which leads him to a choice between being jailed for attempted murder or working with a covert law enforcement agency to break up a mysterious, illegal fight ring.
In London, the teenaged geniuses of STORM, a secret organization dedicated to eliminating the world's misery through science and technology, uncover plans for a deadly weapon and race to find and dismantle it, then confront the corrupt scientist behind the scheme.