"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: 2019
call number/section: 1000
subjects: science, juvenile fiction, scientists, rain forests, genius, orphans, brothers and sisters, fiction, adventure and adventurers, siblings, amazon river region, juvenile fiction, fiction, action and adventure fiction