This book is a nice ending to the series. The blended Robinson family is running out of time to help the space alien Leo finish his work on Earth so he can return to his planet. Two new arrivals to the island are not there to rescue the Robinsons. They’re looking for treasure hidden there years earlier.
Sarah is forced to help treasure hunter Fox find his treasure while his sidekick, Bettina, holds Sarah’s step-mom, the skipper and his granddaughter captive. Meanwhile Sarah’s dad and her two step-brothers are trying to navigate around the island’s crazy, dangerous creatures to get help and rescue the others.
Despite their dangerous predicament, Sarah takes some comfort in the fact that their crazy adventures on this strange island have created something she didn’t think was possible a few weeks ago--it’s made them a family.
Tweens and teens who’ve read thus far in the series will enjoy this satisfying finale as it’s full of the same action, adventure, and bizarre animal creations.