Skylar is excited about her middle-of-the-summer pool party. She knows exactly who she's inviting: but she will NOT invite Mary Kate. Last spring Mary Kate had a sleepover and she didn't invite Skylar. Now Mary Kate can see how it feels to be left out.The ninth book in the series Love God. Love Others. Book nine focuses on Leviticus 19:18 - "Do not seek revenge or bear a grudge against anyone among your people, but love your neighbor as yourself." Geared for grades K-2 to be read to the child. Great teaching aid.