Burn for Burn

Lillia, Mary, and Kat are not friends.   That is what makes their secret revenge pact so perfect.  Circumstances bring them together, and they decide to work together to get even with those who have wronged them.    
Lillia is the perfect daughter.  She is pretty, popular, and beginning her senior year at Jar Island High School.  However, something happened to her over the summer.  Something that has changed her,  and made her fiercely protective of her younger sister.  She will do anything to make sure her sister is not hurt in the same way she was, even if that means getting even with one of her closest friends.
Kat is from the wrong side of the tracks.  Her mother died when she was younger, and her father has not recovered.  Kat is free to roam the island as she pleases, but she is lonely.  She is determined to get back at her former best friend, who has been spreading viscous rumors about her.
Mary is returning to the island after being gone a few years.  She left after something terrible happened to her, and she wants to see the culprit pay.
As the girls begin their revenge, the pranks turn cruel, but it is too hard form them to stop.  They won't stop until they feel they have gotten justice.
This is truly Mean Girls 2.0.  The events leading up to the girls getting revenge are cruel, and they stunts they pull get out of hand fast.  I love Jenny Han, and this book was really, really good.  It ends with a giant cliffhanger, and there are 2 more books to finish the story of these unlikely friends.  I am really interested to see where this story goes.