Order of Book Series
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Gallagher Girls Books in Order

Gallagher Girls by Ally Carter contains 8 books, published between 2006 and 2018. The first book is I'd Tell You I Love You, But Then I'd Have to Kill You (2006) and the newest is The Spies That Bind (2018). Publication order is the reading order below.

Books
8
Published
2006–2018
Confirmed
8 of 8 titles
Pages on record
1,189 in 4 of 8 books
Reading time
20–30 hours

Reading time is an estimate, not a recorded figure: 1,189 pages at 300 words a page, read at 200–300 words a minute, covering the 4 of 8 titles with a page count on record.

See all 8 books in order Printable Gallagher Girls checklist

Gallagher Girls is Ally Carter's spy series for teenage readers, with a private boarding school as its setting and Cammie Morgan as its central character. Eight books run from I'd Tell You I Love You, But Then I'd Have to Kill You (2006) to The Spies That Bind (2018), by way of Cross My Heart and Hope to Spy (2007), Only the Good Spy Young (2010) and United We Spy (2013). A chronological order exists alongside the publication order.

How many Gallagher Girls books are there?

Gallagher Girls has 8 books, released between 2006 and 2018.

Gallagher Girls Books in Publication Order

The table lists all 8 Gallagher Girls books in the order they were published, with the release year, the page count where one is on record, and how many independent book listings confirm each title. Catalogue data as of September 2026.

  1. Cover of Don't Judge a Girl by Her Cover by Ally Carter, book 3 of the Gallagher Girls series (2009)
  2. Cover of United We Spy by Ally Carter, book 7 of the Gallagher Girls series (2013)
  1. 1
    I'd Tell You I Love You, But Then I'd Have to Kill You2006 · confirmed 3/4
    2006–
    Buy at Amazon USAmazon UK
  2. 2
    Cross My Heart and Hope to Spy2007 · confirmed 3/4
    2007–
    Buy at Amazon USAmazon UK
  3. 3
    Don't Judge a Girl by Her Cover2009 · 288 pages · confirmed 3/4
    2009288
    Buy at Amazon USAmazon UK
  4. 4
    Only the Good Spy Young2010 · 288 pages · confirmed 3/4
    2010288
    Buy at Amazon USAmazon UK
  5. 5
    Out of Sight, Out of Time2012 · 320 pages · confirmed 3/4
    2012320
    Buy at Amazon USAmazon UK
  6. 6
    A Gallagher Wedding2013 · confirmed 3/4
    2013–
    Buy at Amazon USAmazon UK
  7. 7
    United We Spy2013 · 293 pages · confirmed 3/4
    2013293
    Buy at Amazon USAmazon UK
  8. 8
    The Spies That Bind2018 · confirmed 3/4
    2018–
    Buy at Amazon USAmazon UK

Gallagher Girls Books in Chronological Order

In story order, The Spies That Bind comes first and A Gallagher Wedding comes last. Chronological order follows the events inside the story rather than the release dates. The 8 books below run in that in-universe sequence.

  1. 8
    The Spies That Bind2018 · confirmed 3/4
    2018–
    Buy at Amazon USAmazon UK
  2. 1
    I'd Tell You I Love You, But Then I'd Have to Kill You2006 · confirmed 3/4
    2006–
    Buy at Amazon USAmazon UK
  3. 2
    Cross My Heart and Hope to Spy2007 · confirmed 3/4
    2007–
    Buy at Amazon USAmazon UK
  4. 3
    Don't Judge a Girl by Her Cover2009 · 288 pages · confirmed 3/4
    2009288
    Buy at Amazon USAmazon UK
  5. 4
    Only the Good Spy Young2010 · 288 pages · confirmed 3/4
    2010288
    Buy at Amazon USAmazon UK
  6. 5
    Out of Sight, Out of Time2012 · 320 pages · confirmed 3/4
    2012320
    Buy at Amazon USAmazon UK
  7. 7
    United We Spy2013 · 293 pages · confirmed 3/4
    2013293
    Buy at Amazon USAmazon UK
  8. 6
    A Gallagher Wedding2013 · confirmed 3/4
    2013–
    Buy at Amazon USAmazon UK

Do you have to read Gallagher Girls books in order?

You should read the Gallagher Girls books in publication order, the order of the numbered table above. The catalogue does not record whether each Gallagher Girls book also stands alone.

Where to start with Gallagher Girls

Start with I'd Tell You I Love You, But Then I'd Have to Kill You (2006), the earliest published title. In the chronological order, The Spies That Bind comes first.

What is the newest Gallagher Girls book?

The Spies That Bind (2018) is the newest Gallagher Girls book released so far.

Is there a new Gallagher Girls book coming?

No next Gallagher Girls book is announced in the catalogue, which is a gap in the listings it merges rather than a sign that the run has ended.

Gallagher Girls at a glance

No recent titles
The newest Gallagher Girls title on record dates from 2018, 8 years ago. No later title is catalogued.
Release pace
Gallagher Girls books have appeared about one every 2 years on average.
Length
1,189 pages across the 4 of 8 books with a recorded length, a median of 290 pages each.
Busiest decade
Most Gallagher Girls books, 5 of 8, were published in the 2010s.

What the Gallagher Girls books are about

4 of the 8 Gallagher Girls books carry subject tags in Open Library's catalogue. The subjects below are the ones that recur across them, most frequent first: boarding schools is tagged on 3 of 4. The subjects are cataloguers’ headings, not a plot summary.

More books by Ally Carter

The author page linked below lists every book in publication order.

Other series by Ally Carter

The series linked below has its own reading-order page.