Karen's Mistake (Baby-Sitters Little Sister #117‪)‬

From the bestselling author of the generation-defining series The Baby-sitters Club comes a series for a new generation!Karen’s year starts out all wrong. Karen plans to have a great new year. It will start with a big party at her house. She will even stay up until midnight! But something strange happens at the party. It makes Karen think her family could be changing. And if it does, Karen could have the worst year ever.