The whole series revolves around 5 girls. They used to be best friends and after one of their friends goes missing in middle school, the 4 remaining girls stop talking and go their separate ways. Book 1 starts off with the girls in high school and they start getting these crazy mysterious texts from someone calling themselves A who threats to spill their deep dark secrets. I ended the book series on book 4 where they found out who was sending the texts.
The book series covers a range of topics from bullying, peer pressure, drug problems, murder, mental illness and others. This series is awesome and I had to write about it. I think I need to finish the series to see what actually happens.