"When Jack and his genius foster siblings, Ava and Matt, discover inventor Hank Witherspoon is missing, they travel deep into the Amazon jungle, overcoming strange creatures, a raging river, and some very clever foes to find their friend and protect his big idea"--Provided by publisher.
year: 2018
call number/section: 1000
subjects: science, fiction, scientists, rain forests, genius, orphans, siblings, juvenile fiction / science & technology, juvenile fiction / science fiction, juvenile fiction / action & adventure / general, amazon river region, fiction, action and adventure fiction