It was really intriguing, and just when you think that everything is revealed...you realize that it's not. Emily gets a text from the mysterious A, which means it's not Toby. Of course it's not Toby, because there are a total of 9 books in the series, with one to be released in December. So it would be way too easy for it to be Toby. But since it's not Toby, who is A? How does A know all their secrets? Did Alison tell A? Why is A taunting them now? How does A know what they're doing at all times? Did they do something to A? I know these questions will be answered at some point in the series...or at least I hope they're answered. 
 I really like the series, at least based on the first couple books. I love how mysterious everything is, and we only get bits and pieces of everything. A mysterious stalker, threatening to reveal their secrets? 4 girls who used to be best friends, but drifted apart after their ringleader mysteriously vanished, only to be brought together again? What's not to like? 
 Rating: 4 out of 5. I was worried that I wouldn't like it, but I do. I'm hoping the series doesn't get all weird or anything. Well, weirder than it already is.