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Non-Fiction Books in Order
Below you'll find the complete list of Non-Fiction books in publication order. This is generally the recommended reading order for the series.
Reading order verified: March 2026
Quick Answer
What order should I read the Non-Fiction series? Start with "Into the Lion's Mouth" (2016) and follow publication order through all 4 books.
The complete Non-Fiction reading order is listed below in publication sequence.
Publication Order
Into the Lion's Mouth
2016
Code Name: Lise
2019
The Princess Spy
2021
The Watchmaker's Daughter
2023
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