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?
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Gertrude Chandler Warner (Author)
Gertrude Chandler Warner was born in 1890 in Putnam, Connecticut, where she taught school and wrote. She was inspired to write The Boxcar Children because she had often imagined how delightful it would be to live in a caboose or freight car. Encou...