This is a quick, horror/thriller read, but I'll be honest, I was confused for most of it. I don't think there was enough spacee for it to be fully realized, especially with the overall world building. There is a volcanic eruption that takes place, but for a lot of the story, it didn't seem like it mattered much to the plot? 

I did appreciate Case's dedication to figuring out what happened to her friend, and she was a good narrator for the story. I just think having that extra time or space would have helped in making an interesting premise work even better.