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Books that share its vibe, closest match first.

The Plunder Down Under

Secret of the Forbidden City

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Lola Benko, Treasure Hunter

Mr. Lemoncello's Very First Game

A Babysitter's Guide to Monster Hunting

Race for the Ruby Turtle

The Mysterious Benedict Society and the Riddle of Ages

Mr. Lemoncello's Fantabulous Finale

Ollie and the Science of Treasure Hunting

Sensationnelle Minispionne

Never say genius