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MYSTERY OF THE INVISIBLE DOG
Robert Arthur
Paperback (Random House Books for Young Readers, Dec. 12, 1984)The three investigators are hounded by supernatural forces as they attempt to recover a stolen sculpture of a legendary wolf-dog.
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Alfred Hitchcock and the Three Investigators in The Mystery of the Invisible Dog
Mary V. Carey
Hardcover (Random House Books for Young Readers, Aug. 12, 1975)The Three Investigators are hounded by supernatural forces as they attempt to recover a stolen sculpture of a legendary wolf-dog.