I Am Number Four: The Lost Files Books in Order

This page lists the complete I Am Number Four: The Lost Files reading order by Pittacus Lore, with book numbers, publication years, and a publication-order view for readers who want to start at the beginning.

Updated 2026-06-22 / 16 books / 2011-2016

I Am Number Four: The Lost Files Reading Order

01 Six's Legacy 2011 Buy

02 Nine's Legacy 2012 Buy

03 The Fallen Legacies 2012 Buy

04 The Search for Sam 2012 Buy

05 The Last Days of Lorien 2013 Buy

06 The Forgotten Ones 2013 Buy

07 Hidden Enemy 2014 Buy

08 Five's Legacy 2014 Buy

09 Return to Paradise 2014 Buy

10 Five's Betrayal 2014 Buy

11 The Fugitive 2014 Buy

12 The Navigator 2015 Buy

13 The Guard 2015 Buy

14 Legacies Reborn 2015 Buy

15 Last Defense 2016 Buy

16 Hunt for the Garde 2016 Buy

I Am Number Four: The Lost Files Books by Publication Order

2011 Six's Legacy #1

2012 Nine's Legacy #2

2012 The Fallen Legacies #3

2012 The Search for Sam #4

2013 The Last Days of Lorien #5

2013 The Forgotten Ones #6

2014 Hidden Enemy #7

2014 Five's Legacy #8

2014 Return to Paradise #9

2014 Five's Betrayal #10

2014 The Fugitive #11

2015 The Navigator #12

2015 The Guard #13

2015 Legacies Reborn #14

2016 Last Defense #15

2016 Hunt for the Garde #16

Questions readers ask

What is the correct I Am Number Four: The Lost Files reading order?

The I Am Number Four: The Lost Files reading order on this page follows the numbered series order where available, with publication years shown beside each book.

How many I Am Number Four: The Lost Files books are there?

This catalog currently lists 16 I Am Number Four: The Lost Files books published across 2011-2016.

Who writes the I Am Number Four: The Lost Files books?

I Am Number Four: The Lost Files is listed as a book series by Pittacus Lore.

Should I read I Am Number Four: The Lost Files in publication order?

For most readers, publication order is the safest way to read I Am Number Four: The Lost Files. If a separate series order is available, this page shows that order first and publication years beside each title.

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Source note: Sequencebooks organizes author, book, and series records from its catalog data. Publication years and series order are shown when available.