While visiting Sea City, Karen tries to bring a bossy girl down a peg by bragging that she saw a real live mermaid in the ocean, until a note from a real mermaid arrives, asking Karen to be her friend. Ann M. Martin is the creator of The Baby-sitters Club, which has more than 190 million books in print, making it one of the most popular series in the history of publishing. Her novels include A Corner of the Universe (a Newbery Honor Book), Belle...