The Secret Book Club

The Secret Book Club is the fifth book in the Main Street series.

Summary
Flora, Ruby, Olivia, and Nikki don't understand it. Someone - they don't know who - is leaving books on their doorstep. Each comes with a mysterious message asking them to read the book and do something new. Before they know it, the four friends have a secret, girls-only book club...and are finding out new things about themselves and one another.

Who's sending these packages? And what will the next book be? The girls can't wait to find out...