If you like Eagle Strike by Anthony Horowitz
Sure fire by Jack Higgins with Justin Richards.
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 a dangerous international
plot to control the world's oil.
Cross my heart and hope to spy by Ally Carter.
Cammie Morgan is a CIA legacy and attends the premier school in the
world...for spies. The school hosts some mysterious guests with the code
name Blackthorne. When Cammie is blamed for a security breach that
threatens to expose the school's top secret status, she and her friends
face danger to clear Cammie's name and learn the truth about
For Freedom: the Story of a French Spy by Kimberly Brubaker Bradley.
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. Based on a true story.
You may also enjoy these adventure stories:
Mortal Engines by Philip Reeve.
As this post-apocalypse science fiction begins, "the city of London was
chasing a small mining town across the dried-out bed of the old North
Sea." Cliffhanger chapter endings and heart-stopping action keep Tom and
Hester's story moving at breakneck speed. The sequel is Predator's Gold.
Although these books are not precisely spy/adventure stories, they have
lots of action and unexpected plot twists that keep you on the edge of
Tomorrow When the War Began by John Marsden.
The female narrator leads a group of teenagers who escaped capture by a
foreign army that has invaded their country (Australia). Ellie and her
friends (both boys and girls) plan several military counter-measures in
this novel and the sequels.
The Gadget by Paul Zindel.
In 1945, having joined his father at Los
Alamos, where he and other scientists are working on a secret project to
end World War II, thirteen-year-old Stephen becomes caught in a web of
secrecy and intrigue.