Some families are ARE a little too close! A shock from a numbfish has shrunk Andrew, Judy, and Thudd to microscopic size. Just when they think Uncle Al has rescued them, a mosquito bite injects them into his bloodstream! They travel to his lungs and pay a friendly visit to his mucous membranes.

Will they ever find their way out of Uncle Al? Or will this family tie become a permanent knot?

J. C. Greenburg is the author of many books for young people in the library and reference fields. She's married to Dan Greenburg, author of the Zack Files and Weird Planet. She lives in Hastings-on-Hudson, New York.

Jan Gerardi is an art director and has illustrated several books for children. She has a husband, a daughter, and two dogs. She lives in Little Egg Harbor, New Jersey.

When an electric fish shrinks Andrew, Judy, and Thudd to the size of bacteria, they end up being injected by a mosquito into Uncle Al's bloodstream where they must battle germs, parasites, and white blood cells.