While Vega's first book didn't wow me like I was hoping, she was definitely good with the gore factor and she does it again here. I loved her descriptions of the death scenes and her attention to the gruesome details kept me engaged and entertained. I don't know what that says about me in particular, but that's another story. After reading this book, I think it's safe to say that this is just her style. Other than that though, her books tend to be okay for me. She obviously likes to deal with troubled teens and really lets the reader get in their heads. However, I was expecting a bit more oomph, more scary moments, and less drama than what I got. 
 Maybe the horror genre is too tame in YA for my liking. I need to find a good adult horror. Anyways... 
 After reading the synopsis, I went into this thinking it would be something along the lines of a psycho murderer kind of read. What I got was something else entirely. Honestly, I'm still 100% not sure what went down and I'm guessing that's the way Vega wanted readers to feel. She messes with your mind a bit in this book and although I would've preferred the murderer theme, I can respect her stepping outside the box. I don't like ending the book with a ton of unanswered questions, though, so not cool there, Vega. I will say that for the first 100 or so pages of the book, nothing much happens. It kind of took that long for the characters to even get to the party, really. There is a lot of background information and even then I feel like I didn't get the full picture. 
 Casey was a bit of a pickle for me. I've seen the woes of addiction firsthand, so I could sympathize with her and her mindset, but some of the time she was a bit too immature and shallow for me. We were in her head a lot and I didn't particularly care for it. I did like how much she cared for her friends, like Julie and Aya. Shana I could read like a picture book and I didn't like her at all. I kind of wish we got to know Sam a bit more though. 
 Would I recommend this? I suppose if you're into twisty tales with a touch of gore and a bit of a mindfuc*, then yeah, you might want to give this a read. There's a touch of romance in there as well, if you're looking for that. It wasn't terrible, and as far as Halloween reads go, it gives a mild sense of spook. I'm still open to reading more from Vega, although I need to remember this recognition of her writing style so I don't go in with any expectations.