Karen's Goldfish (Baby-sitters Little Sister #16) in Bloomington, MN

It's fun to be a Baby-sitters' Little Sister!
Karen and her little brother Andrew are getting new pets — goldfish! Karen names hers Crystal Light. Andrew's is called Goldfishie. Karen and Andrew love to watch their fish swim around and around.
Then something happens to Crystal Light, and Karen is so sad. Nothing can make her feel better...until Karen's witchy neighbor saves the day!