Gallagher Girls: United We Spy
On sale
30th July 2026
Price: £9.99
The sixth and final book in the million copy selling Gallagher Girls series set at an elite boarding school for spies. Perfect for fans of XO, Kitty.
What is a Gallagher Girl? She’s a genius, a scientist, a heroine, a spy . . . a Gallagher Girl is whatever she wants to be.
Cammie Morgan is about to take on her final and most dangerous mission at Gallagher Academy. Armed with the truth about why she’s being hunted by an ancient criminal organisation, Carrie and her friends must track down its elusive members to save their sisterhood – and the world. But will they survive to see graduation?
What is a Gallagher Girl? She’s a genius, a scientist, a heroine, a spy . . . a Gallagher Girl is whatever she wants to be.
Cammie Morgan is about to take on her final and most dangerous mission at Gallagher Academy. Armed with the truth about why she’s being hunted by an ancient criminal organisation, Carrie and her friends must track down its elusive members to save their sisterhood – and the world. But will they survive to see graduation?
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Reviews
Back for a sixth and final mission in the extremely popular, super-twisty and very addictive series
Absolutely unputdownable and completely gripping...everything that fans of this series will have been waiting for. Brilliant...engaging and ever...a fantastic and intriguing story. 10/10. An incredible series in which each book gets better and better
