The Baby-sitters are split up for vacation, and Kristy's in the hospital. How will the girls stay in touch? Leave it to Kristy and her great ideas. She's received a special chain letter in the mail--one where you have to write a letter to someone else. So
Abby notices a mystery musician in middle school...and develops her first crush!Now that she's in sixth grade, Abby's discovering new friends and new talents. She's also discovering a major new interest: a boy! Simon is a sax player in an exclusive school
