La serie The Hardy Boys: Secret Files, de Franklin W. Dixon, reúne 19 libros de misterio y aventura. Entre los títulos figuran Trouble at the Arcade, The Missing Mitt, Mystery Map, Hopping Mad y A Monster of a Mystery.
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Trouble at the Arcade
2010
The Missing Mitt
2010
Mystery Map
2010
Hopping Mad
2010
A Monster of a Mystery
2011
The Bicycle Thief
2011
The Disappearing Dog
2011
Sports Sabotage
2012
The Great Coaster Caper
2012
A Rockin' Mystery
2012
Robot Rumble
2013
Lights, Camera . . . Zombies!
2013
Balloon Blow-Up
2013
Fossil Frenzy
2014
Ship of Secrets
2014
Camping Chaos
2014
The Great Escape
2015
Medieval Upheaval
2015
The Race Is On
2015