The Robot Ransom

Henry and Jessie have signed up to be in a robotics competition with a team from school. But someone from another team isn't playing by the rules. Can the Aldens use their sleuthing skills and what they've learned about technology to find the culprit and save the day?

Bibliographic Details
Main Author: Warner, Gertrude Chandler
Format: EAUDIO
Other Format: BOOK EBOOK
Published: BookaVivo 2018