Magic Tree House #38: Time of the Turtle King

The #1 bestselling Magic Tree House series is ready to whisk you away across the world with Jack and Annie--this time as World Turtle Experts in the Galapagos Islands!!

It's just a regular day when ordinary kids Jack and Annie are whisked away in the magic tree house to the Galapagos islands, where they must save a giant tortoise from an erupting volcano! But what do Jack and Annie know about saving turtles?! Plenty, thanks to some magic that makes them experts. A helicopter ride, rushing lava, and a whole lot of determination make this one adventure Jack and Annie will never forget! 

If you're looking for Merlin Mission #38: Monday with a Mad Genius, it was renumbered as Merlin Mission #10 when the series was rebranded in 2017.