From the back of the book:
Henry, Jessie, Violet, and Benny used to live alone in a boxcar, but now they have a home with their grandfather. And now they're looking for a very special cat that has disappeared.
When the children hear that Mr. Woods's cat, Spotzie, is missing, they immediately help out by putting up LOST CAT posters and going door-to-door with a photograph of the cat. But along the way they meet some strange characters, receive frightening phone calls, and even find a cat that looks just like Spotzie - but is it? It seems the more they search, the more mysterious the mystery becomes!
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ISBN-13: 978-0-8075-5406-7
ISBN-10: 0-8075-5406-5