This book is about a girl named Abby who has a friend, Gretchen, who begins to act strangely after a bad night of bad decisions. 
 This book almost got 5 stars but a star was removed for two interesting reasons. 
 Well actually some name swaps by accident. Hendrix kept referring to Mrs Lang and Mrs Rivers as each other, or separating Mrs Lang and Gretchens mom when they are in fact the same person. Just a little name confusion. I mean gag me with a spoon. 
 Sorry. 
 Next reason: 
 I know the book was pegged as horror, but I actually was getting into the slice of life theme during the bulk of it. Abby's strange behavior was suspiciously like schizophrenia and dissociative identity disorder, and I was hoping that the book turned into a wake up call almost to address mental illness. 
 It went the traditional route of a campy 80s horror though. I was simultaneously satisfied and disappointed. I guess it took a long time to setup the exorcism. 
 The soundtrack was very rad (not sorry). I listened to every song at every chapter, and had a backup 80s playlist for the parts in between. 
 Basically it's a decent slice of life book that evolves into a campy horror. It could have been much more profound of mental health aspect had been played up instead of straight classic horror tropes. But 90% of the book was awesome so I can't go below 4 stars.