There are 6 books in the Gallagher Girls series. The newest book is United We Spy which came out in 2013.

Gallagher Academy might claim to be a school for geniuses - but it's really a school for spies. Cammie Morgan is fluent in fourteen languages and capable of killing a man in seven different ways (three of which involve a piece of uncooked spaghetti). But the one thing the Gallagher…

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2
Cross My Heart and Hope to Spy

Book cover of Cross My Heart and Hope to Spy
Don't miss a moment of the beloved, bestselling series where spies-in-training navigate double crosses, secret missions, friendship, and first love-now with a bonus epilogue!

After the excitement of the fall, all Cammie Morgan wants is peaceful semester at school. But that's easier said than done when you're a CIA legacy…

3
Don't Judge a Girl by Her Cover

Book cover of Don't Judge a Girl by Her Cover
Friendship. Romance. Espionage. The Gallagher Academy for Exceptional Young Women is no ordinary boarding school. Don't miss a moment of the New York Times bestselling series-now with a bonus epilogue!

When Cammie Morgan visits her roommate Macey in Boston, she thinks she's in for an exciting end to her summer.…

4
Only the Good Spy Young

Book cover of Only the Good Spy Young
Don't miss a moment of the beloved, bestselling series where spies-in-training navigate double crosses, secret missions, friendship, and first love--now with a bonus epilogue!

When Cammie Morgan enrolled at the Gallagher Academy, she knew she was preparing for the dangerous life of a spy. What she didn't know was that…

5
Out of Sight, Out of Time

Book cover of Out of Sight, Out of Time
Friendship. Romance. Espionage. The Gallagher Academy for Exceptional Young Women is no ordinary boarding school. Don't miss a moment of the New York Times bestselling series-now with a bonus epilogue!

The last thing Cammie Morgan remembers is leaving the Gallagher Academy to protect her friends and family from the Circle…