Book Series · 3 Books

Harriet the Spy Books

In order from Harriet the Spy to Harriet the Spy, Double Agent.

The Harriet the Spy series is a set of 3 chapter books by Louise Fitzhugh, published between 1964 and 2005. Written for ages 8–12, most books run about 260 pages. Subjects across the series include diaries, sleuthing, and saying sorry.

About the series

What's Harriet the Spy About?

Three middle-grade mysteries follow sharp-eyed Harriet Welsch as her spying tests friendships, trust, and her own judgment.

Where the story begins

First Book in the Series

Sale price

$858

Book #1 · Chapter Book · Ages 8–12 · 1964

Harriet the Spy

By Louise Fitzhugh

A young spy's secret notebook falls into the wrong hands, threatening her friendships.

300 pages· 57,761 words· Est. 8 hour read

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Paperback

Summary: Harriet M. Welsch, an 11-year-old spy, meticulously records her observations about everyone around her. But when her notebook is lost and discovered by her friends, the harsh truths she penned threaten to unravel her world. Can Harriet mend her friendships and learn the true power of words? Dive into this classic tale of honesty, betrayal, and redemption set in the bustling streets of New York City. Will Harriet's sharp insights lead to healing or further chaos?

In reading order

Harriet the Spy Series

3 books · Published 1964–2005

#1 in Series

Sale price

$858

Harriet the Spy

Chapter Book · Ages 8–12 · 1964

A young spy's secret notebook falls into the wrong hands, threatening her friendships.

#2 in Series

Sale price

$759

Harriet Spies Again

Chapter Book · Ages 8–12 · 2002

Harriet must uncover the mystery behind Ole Golly's return and her claim of innocence.

#3 in Series

Sale price

$674

Harriet the Spy, Double Agent

Chapter Book · Ages 8–12 · 2005

Harriet's new friend Annie hides secrets. Can Harriet uncover the truth about love and identity?

Good to know

Common Questions

How many books are in the Harriet the Spy series?

There are 3 books in the Harriet the Spy series. It began with Harriet the Spy in 1964, and the newest book, Harriet the Spy, Double Agent, was published in 2005.