English language
Published Nov. 20, 1986 by Scholastic Inc..
Follows the adventures of Kristy and the other members of the Baby-sitters Club as they deal with crank calls, uncontrollable two-year-olds, wild pets, and parents who do not always tell the truth.
For the graphic novel based on this book, see Kristy's Great Idea–Baby-Sitters Club Graphic Novels #1.