Titles in This Set:
I'd Tell You I Love You, But Then I'd Have to Kill You
Cross My Heart and Hope to Spy
Don't Judge a Girl by Her Cover
Only The Good Spy Young
Out of Sight, Out of Time
United We Spy

Condition: BRAND NEW
Format: Paperback
ISBN: 9781408309513 9781408309520 9781408309537 9781408309544 9781408314746 9781408314753

Overview:
Gallagher Girls is Ally Carter’s celebrated YA spy fiction series, brought together here in a complete six-book collection. Following Cammie Morgan, a Gallagher Academy student who is as fluent in languages as she is in undercover work, these adventures blend high-stakes espionage with sharp wit and heartfelt friendships. From covert missions on school grounds to globe-spanning threats, the books deliver rapid pacing, clever twists, and a heroine whose loyalty to her mates and her code never wavers. This set is the perfect entry point for new readers and a satisfying binge for longtime fans, offering a seamless, immersive journey into a world where intelligence is a superpower and sisterhood is the ultimate shield.

What Makes This Collection Special:
What makes this Gallagher Girls collection genuinely shine is its steady, character-driven progression. Across six titles, Cammie and her friends evolve from clever schoolgirls to capable, morally grounded agents, with each mystery tightening the bonds of friendship and trust. The shared universe—the Gallagher Academy, its quirky gadgets, and its sharp, witty narration—creates a binge-worthy reading experience where jokes sit beside danger and courage sits beside compassion. The six-book bundle also offers real value: convenience, a uniform reading order, and a display-ready shelf-pleaser that makes gifting easy for teens and adult fans alike.

Books Included in This Collection:
I'd Tell You I Love You, But Then I'd Have to Kill You
Inside the opening adventure, Cammie Morgan navigates life at a school for geniuses that teaches more than spelling and science—it's a training ground for spies. The balance between crushes, coursework, and covert missions sets the tone for the series: witty, fast-paced, and emotionally grounded. This mission-first narrative introduces a loyal circle of "Gallagher Girls" and proves how wit and nerve can outsmart danger while building friendships that last a lifetime.

Cross My Heart and Hope to Spy
Cammie’s second mission escalates the stakes. As friendships are tested and loyalties questioned, she uncovers secrets that threaten the Gallagher sisterhood itself. The pace remains brisk, with clever disguises and a thread of romance weaving through the intrigue. Carter deepens the world-building, showing how trust must be earned again and again, even among allies who know each other’s strongest weaknesses.

Don't Judge a Girl by Her Cover
A new assignment and evolving threats push Cammie beyond comfort zones, forcing difficult decisions about identity and allegiance. The narrative keeps its signature humor while heightening danger, illustrating how appearances can be deceiving and how courage blooms under pressure. The result is a compelling blend of action, wit, and heart—a standout entry that cements the series’ addictive blend of spycraft and sisterhood.

Only The Good Spy Young
The stakes rise again as a sinister conspiracy reaches into the heart of Gallagher Academy. Cammie and friends confront a web of secrets that tests trust, resilience, and skill. Carter tightens the plotting with sharper twists and higher personal risk, delivering a suspenseful arc that balances adrenaline-fueled moments with character moments readers will carry forward into the final installments.

Out of Sight, Out of Time
Memory becomes the battleground as Cammie wakes with gaps she must fill to understand last summer—and to prevent a looming threat. The Alpine setting and the ever-present danger push the stakes higher while intimate moments remind readers why these characters feel real. It’s a deft blend of mystery, coming-of-age nuance, and unmistakable grit that keeps readers turning pages.

United We Spy
The finale brings Cammie’s six-book arc to a thrilling close. A global threat tests every bond forged at Gallagher, but the power of friendship, trust, and determined courage carries the team through. The conclusion honors the series’ spycraft with satisfying twists and emotional payoff, leaving readers with a sense of completion and a lasting admiration for these bold, clever heroines.

Who This Set Is Perfect For:
Teen readers and adult fans who crave fast-paced, witty espionage with heart will find this collection irresistible. It’s ideal for fans of strong female leads, school-to-mission narratives, and YA adventures with romance and humor. Gift buyers will appreciate the complete six-book arc in a single, cohesive package, while collectors will value the consistent UK paperback design and the convenience of owning the full series in one place.

Key Benefits:

• Complete six-book Gallagher Girls collection in one affordable package
• Engaging, female-led spy adventures with humor and resilience
• Read in order for maximum character development and plot continuity
• Perfect gift for teens, BookTok fans, and collectors of YA thrillers
• Premium paperback format with uniform packaging for display and durability

About the Author:
Ally Carter is the bestselling author behind the Gallagher Girls series, a beloved staple of YA spy fiction that blends clever plotting, sharp dialogue, and a fearless, funny heroine. Her other popular works include The Heist Society and the Embassy Row series, which expand her globe-trotting, heist-filled worlds. Carter’s books are celebrated for their fast pace, witty banter, and strong themes of friendship, courage, and personal growth. This collection showcases her signature voice in a complete, immersive journey through Gallagher Academy that will delight new readers and longtime fans alike.

Why You’ll Love This Set:
Owning the complete Gallagher Girls collection means instant binge-reading power and a cohesive reading journey. The six titles build a rich arc of character growth, clever missions, and empowering messages about loyalty and friendship. It’s an ideal gift for teens and adults who relish clever spycraft with humour, or for readers seeking a premium, shelf-worthy set to display with pride. The uniform UK paperback editions create a stylish, recognizable presence on any bookshelf.

Please Note: The individual books included in this listing will be dispatched as per the original UK ISBN and UK edition cover image shown in the image.