The story falls on the shoulders of Alexis who is, at best, a deeply flawed character. She is usually callous and sometimes mean. She often goes out of her way to spread rumors about those who have hurt her in the past. This is not the character you root for from the beginning. This is the character that you realize has a lot of growing up to do and hope that she does. I have encountered these types of character before, but I am very pleased that in Alexis' case, all of her growing up does not occur within the first book. She continues this development and I hope by the third book in the series will have become a character I can be proud of.
Alender also does quite a good job of painting realistic relationships, between Alexis and her "arch enemy", her crush and her sister. The cheerleader is not all villain, there is no insta-love and the sisters do not bond over boys and shopping. Instead, we see these relationships grow and develop (albeit under extreme circumstances) and Alexis begins to see the value in each, especially the love for her family.
There are far too few truly creepy YA books out there. We tend to gorge ourselves on this genre in younger years, with Goosebumps and Scary Stories to Tell In The Dark, but we seem to lose it as we get older. Thank you Katie Alender for bringing me back to those childhood moments of sneaking a flashlight into my room and reading beneath the covers.