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Lost & Found (World Book) Books in Order

6 books by Madeline King. Reading level: Grades 4.1–4.5. Middle Grades (Ages 9–12).

Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Lost & Found (World Book) (6 books by Madeline King) lands at reading level Grades 4.1–4.5, with average content intensity 1.2/5. Intensity stays consistent across the series — a kid who can handle the first book can generally handle the rest.

The reading-order table below lists every book with per-volume reading level and intensity badges so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.

6
Books
Grades 4.1–4.5
Reading Level
1.2/5
Avg. Intensity
MG
Middle Grades

Content Intensity Across the Series

Consistent

Content stays at a steady intensity level throughout the series.

1
2
3
4
5
6
First book Latest book

Lost & Found (World Book) Reading Order

# Title Reading Level Content
1 Coat of Arms Conundrum
Madeline King
Level 4-5 Gentle
2 Hei-Tiki Quandary
Madeline King
Level 4-5 Gentle
3 Pirate Flag Fiasco
Madeline King
Level 4-5 Mild
4 Pok-A-Tok Pursuit
Madeline King
Level 4-5 Gentle
5 Saxophone Stumper
Madeline King
Level 4-5 Gentle
6 Shadow Puppet Perplexity
Madeline King
Level 4-5 Gentle

Questions about the Lost & Found (World Book) series

What reading level is the Lost & Found (World Book) series?
The Lost & Found (World Book) series by Madeline King is at a Grades 4.1–4.5 reading level (average Grade 4.4). Intended for Middle Grades (Ages 9–12). There are 6 books in the series.
What order should I read the Lost & Found (World Book) books?
The reading-order table above lists all 6 books with per-volume reading level and intensity ratings. Start with book 1 and read in publication order unless the table indicates a different recommended order for newer readers.
What age is the Lost & Found (World Book) series appropriate for?
The Lost & Found (World Book) series is recommended for Middle Grades (Ages 9–12). The average content intensity is 1.2/5. Check the intensity trajectory above to see whether content gets heavier across the series — if it does, sensitive readers may want to stop earlier in the run.