Agent Q, or the Smell of Danger
by M. T. Anderson
As Lily, Katie, and Jasper try to return home after their adventures in Delaware, they face a protoplasmic monster, sleeping gas, a runaway rice cart, sentient lobsters, and spies of the Awful and Adorable Autarch of Dagsboro.
by Julia Platt Leonard
When thirteen-year-old Oz Keillor finds a dead body in his family's Santa Fe, New Mexico, restaurant, he is determined to solve the mystery in which his older brother is implicated, but which also involves their long-dead father, who was accused of being a spy.
Liar & Spy
by Rebecca Stead
Seventh-grader Georges adjusts to moving from a house to an apartment, his father's efforts to start a new business, his mother's extra shifts as a nurse, being picked on at school, and Safer, a boy who wants his help spying on another resident of their building.
by Dan Gutman
On a cross-country vacation with their parents, twins Coke and Pepsi, soon to be thirteen, fend off strange assassins as they try to come to terms with their being part of a top-secret government organization known as The Genius Files.
Ruby Redfort: Look into My Eyes
by Lauren Child
Thirteen-year-old Ruby, a genius code-cracker and daring detective, gets an anonymous call setting a challenge that leads her to the headquarters of Spectrum, a highly secret anti-crime agency that needs her help to crack a code, but soon Ruby uncovers dastardly plans of the Fool's Gold Gang.
Samantha Sutton and the Labyrinth of Lies
by Jordan Jacobs
There's nothing Samantha Sutton wants more than to become an adventure-seeking archaeologist like her brilliant Uncle Jay. Samantha's big dreams are finally coming true when Jay invites her along on a summer excavation of an ancient temple in the Peruvian Andes.
The Case of the Case of Mistaken Identity
by Mac Barnett
When twelve-year-old Steve Brixton, a fan of Bailey Brothers detective novels, is mistaken for a real detective, he must elude librarians, police, and the mysterious Mr. E as he seeks a missing quilt containing coded information.
The Family Hitchcock
by Mark Levin
When they agree to a summertime house swap with an unknown family in Paris, the four members of the Hitchcock family inadvertently get mixed up in a ring of international espionage.
The Ring of Five
by Eoin McNamee
Kidnapped on his way to boarding school, Danny Caulfield, who has one blue eye and one brown eye, ends up at a mysterious academy of spies, where he is to be trained in the art of espionage in an effort to keep the Upper and Lower worlds from colliding.
by Jacqueline West
When eleven-year-old Olive and her distracted parents move into an old Victorian mansion, Olive finds herself ensnared in a dark plan involving some mysterious paintings, a trapped and angry nine-year-old boy, and three talking cats.
Zeke Bartholomew: Superspy
by Jason Pinter
When average kid Zeke Bartholomew is kidnapped and mistaken for a spy, he finds himself in the middle of a dangerous mission to stop the evil mastermind Le Carré from turning the children of the world into mindless zombies.