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The Giant Yo-Yo Mystery
The Giant Yo-Yo Mystery
Book Number: 107
Publication Date: 2006
Plot Synopsis:
The Aldens are helping one of Grandfather's friends break a world record by building the world's largest yo-yo! As they help with the projectm strange things begin to happen. First someone follows them, and then the plans for the yo-yo turn up missing. Someone is trying to sabotage the yo-yo before it's launched!