What do you think?
Rate this book
Jack and the Geniuses #3
Lost in the Jungle
Famed inventor Henry “Hank” Witherspoon has gone missing, and it’s up to Jack and his brilliant siblings, Ava and Matt, to find him.
At Hank’s ransacked lab, the siblings discover clues to the project he’s been working on—a new way to generate and store electricity, inspired by the electric eels of the Amazon.
The kids travel deep into the Amazon jungle, following a series of clues Hank has left. Relying on genius, cunning, and new technology, the kids overcome strange creatures, a raging river, and some very clever foes to find their friend and protect his big idea.
Like volumes one and two, Lost in the Jungle features a glossary of terms and an experiment kids can do at home or at school.
At Hank’s ransacked lab, the siblings discover clues to the project he’s been working on—a new way to generate and store electricity, inspired by the electric eels of the Amazon.
The kids travel deep into the Amazon jungle, following a series of clues Hank has left. Relying on genius, cunning, and new technology, the kids overcome strange creatures, a raging river, and some very clever foes to find their friend and protect his big idea.
Like volumes one and two, Lost in the Jungle features a glossary of terms and an experiment kids can do at home or at school.
288 pages, Hardcover
Published April 17, 2018
23 people are currently reading
169 people want to read
About the author
Bill Nye
101 books1,182 followersNot to be confused with 19th century American humorist Bill Nye
William Sanford "Bill" Nye, popularly known as Bill Nye the Science Guy, is an American science educator, comedian, television presenter, actor, writer, scientist, and former mechanical engineer, best known in popular media as a science educator.
William Sanford "Bill" Nye, popularly known as Bill Nye the Science Guy, is an American science educator, comedian, television presenter, actor, writer, scientist, and former mechanical engineer, best known in popular media as a science educator.
Ratings & Reviews
Friends & Following
Create a free account to discover what your friends think of this book!
Community Reviews
Displaying 1 - 14 of 14 reviews
April 4, 2026
Love this series! I also really like who it’s dedicated to, and the way the ending wraps everything up so nicely. If I had to rank the books, the second one is still my favorite because of the plot, and the third comes in second mainly because of that great ending. The first book would be last for me. Even as an adult, this series has been such a fun read, and I like how it includes interesting science throughout.
May 6, 2018
Book 3. Hank has disappeared and his lab has been trashed. Jack and his genius siblings are worried and go after him after they find a few clues in the mess. They had to the Amazon to find out what electric eels, batteries, and a missing inventor have in common. Fun adventure with science thrown in.
Not as well put together as the first two. This time the bad guy was fairly obvious unlike the other two, but the science was good.
Not as well put together as the first two. This time the bad guy was fairly obvious unlike the other two, but the science was good.
July 9, 2019
Sounds like if there is a fourth book in the series they are going to be working with NASA (which makes sense considering Bill Nye's job with the Planetary Society) - it should be great! My only complaint about this one, however, deals with consistency. Is Hank a vegetarian or not? Why did he change? The answer is never given.
April 23, 2026
“…if I’m amazing at something, I still haven’t found it.”
Jack’s siblings are geniuses. He on the other hand is still learning where his strengths lie. What he does know is how he helps his brother and sister. The things he is willing to step up and do while they are thinking and inventing.
I really enjoyed this book, in large part because it made the most of the independence of these kids. They fought to raise themselves in a world full of people who were letting them down, but Min and Hank have proven worthy of giving a chance, and these kids are being reminded of some of the greatest joys of family and growing up.
Jack’s siblings are geniuses. He on the other hand is still learning where his strengths lie. What he does know is how he helps his brother and sister. The things he is willing to step up and do while they are thinking and inventing.
I really enjoyed this book, in large part because it made the most of the independence of these kids. They fought to raise themselves in a world full of people who were letting them down, but Min and Hank have proven worthy of giving a chance, and these kids are being reminded of some of the greatest joys of family and growing up.
June 19, 2021
Well, he dedicated the book to foster parents. I’m sure there were more than a few complaints about the past two episodes with stories about unqualified foster parents. He also gave them two Latinx friends to team up with. And he proposed another adventure; but, it hasn’t been published yet. Good series but I understand how loving, caring, competent foster parents would be offended.
September 11, 2018
This is hands down one of my favorite middle grade series. This installment definitely did not disappoint!
October 1, 2018
Good book, but I think that Jack is way too silly and childish
December 12, 2018
I really like the book read it
January 13, 2019
Exciting pace and plot makes science & reading fun. I read all 3 and as an adult I enjoyed them and learned a few things.
October 12, 2019
This one was just as great, they really can make every sequel just as good!
August 30, 2020
I loved this book SO much. It's so informational and it has fun adventures to.
September 27, 2021
I read the whole series but this one was the best. Even though the bad guy was so obvious I really like the book. A lot of science contents and a lot of adventure.
April 26, 2023
A 6hr audio book. A great story of Jack and his family making their way through the Amazon and solving some good mysteries.
March 27, 2026
My 9 year old and I really loved the critical thinking, humour and adventure of this series.
Displaying 1 - 14 of 14 reviews