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How It Works Books in Order
Below you'll find the complete list of How It Works 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 How It Works series? Start with "Castle: How It Works" (2012) and follow publication order through all 4 books.
The complete How It Works reading order is listed below in publication sequence.
Publication Order
Castle: How It Works
2012
Jet Plane: How It Works
2012
Toilet: How It Works
2013
Eye: How It Works
2013
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