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6 total works
The invisible boy Chip intends to enter his invisible dog Max in the dog show, but when Max goes missing, Chip and his Invisible Inc. friends suspect foul play.
When Charlene's prize-winning paper disappears on Parents' Night, Invisible Inc. comes to the rescue in this illustrated classroom mystery. Full color.
When someone takes Justin's karate belt, his friends in Invisible Inc. try to determine a motive as they investigate the mystery.