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Penny and Rio Books in Order
Below you'll find the complete list of Penny and Rio books in publication order. This is generally the recommended reading order for the series.
Reading order verified: April 2026
Quick Answer
What order should I read the Penny and Rio series? Start with "The Mysterious Backyard Meeting (With: Jennifer Swanson,Rosita Schandy)" (2008) and follow publication order through all 3 books.
The complete Penny and Rio reading order is listed below in publication sequence.
Publication Order
The Mysterious Backyard Meeting (With: Jennifer Swanson,Rosita Schandy)
2008
The Locked Doghouse Mystery (By: Jennifer Swanson,Swapan Debnath)
2009
The Diamond Collar Adventure (By: Jennifer Swanson,Swapan Debnath)
2010
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