Book Series · 4 Books

Charlie Thorne Books

In order from Charlie Thorne and the Last Equation to Charlie Thorne and the Royal Society.

The Charlie Thorne series is a set of 4 chapter books by Stuart Gibbs, published between 2019 and 2024. Written for ages 8–12, most books run about 420 pages.

Charlie Thorne and the Curse of Cleopatra

Where the story begins

First Book in the Series

Sale price

$858

Book #1 · Chapter Book · Ages 9–12 · 2019

Charlie Thorne and the Last Equation

By Stuart Gibbs

A young genius must outsmart a sinister group to protect Einstein's hidden equation.

402 pages· 76,082 words· Est. 8.5 hour read

$8.99Save 5%

Paperback

Summary: Charlie Thorne, a brilliant young code-breaker, is thrust into a global race against the Furies, a dangerous group seeking Einstein's hidden equation. With the CIA relying on her genius, Charlie must navigate a perilous world of secrets and deception. Can she crack the code and save humanity, or will the equation fall into the wrong hands? In this high-stakes adventure, trust is scarce, and the clock is ticking.

In reading order

Charlie Thorne Series

4 books · Published 2019–2024

#1 in Series

Sale price

$858

Charlie Thorne and the Last Equation

Chapter Book · Ages 9–12 · 2019

A young genius must outsmart a sinister group to protect Einstein's hidden equation.

#2 in Series

Sale price

$858

Charlie Thorne and the Lost City

Chapter Book · Ages 8–12 · 2021

A young genius races to uncover Darwin's lost treasure before her enemies do.

#4 in Series

Sale price

$1797

Charlie Thorne and the Royal Society

Chapter Book · Ages 8–12 · 2024

A genius races to uncover Newton's secret treasure before her relentless pursuers do.

Series

Sale price

$858

Charlie Thorne and the Curse of Cleopatra

Chapter Book · Ages 8–12 · 2022

A genius must solve ancient clues to find Cleopatra's hidden treasure before enemies do.

Good to know

Common Questions

How many books are in the Charlie Thorne series?

There are 4 books in the Charlie Thorne series. It began with Charlie Thorne and the Last Equation in 2019, and the newest book, Charlie Thorne and the Royal Society, was published in 2024.