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The Mad Scientist's Secret (Amazing Adventure Puzzle Thrillers)
The Mad Scientist's Secret - Amazing Adventure Puzzle Thrillers Author:Marvin Miller, Tony Tallarico (Illustrator) The reader solves a variety of puzzles, riddles, mazes, and secret codes to help stop the Mad Scientist Dr. XXX from turning students into zombies with his secret formula for sludge which tastes just like school cafeteria food.