Glimpse was a lot like going to the Cheesecake Factory and thinking that cheesecake AND decadent hot chocolate is a good idea. You start off eating the cheesecake, and it's so delicious, but then you get thirsty and all you have to quench your thirst is a cache of hot chocolate hidden beneath a mountain of whipped cream. Suddenly, nothing tastes very good anymore. How could such a delicious dessert go so wrong?? 
 Now, I'm not saying Glimpse was a delicious dessert, but it WAS a free read. That in itself gives me more room to stomach it. And it started off okay. The premise was promising [I can't hold back on the alliteration today] because it wasn't like any other YA para I've read yet. 
 So first arrived the hot chocolate, since the drinks ALWAYS come first: 
 Zellie lives in a small town. 
 Zellie is a preacher's daughter but isn't a bible humper. She's actually pretty normal. 
 Zellie has a crush on Avery, who we find out from the synopsis of the book is the son of her mom's high school lurv. Which I think is kind of weird, I mean, this is a huge part of the plot and you already know about it before you even open the book. But whatevs. 
 Zellie and her crush and her small town are stock YA. So is the annoyingly rich best friend and the grumpy younger sister. It was actually an okay start to a book though, because it was obvious the author put a lot of thought into how she wanted to introduce the characters and the beginning of the book. 
 And then the cheesecake came. 
 It was like the author thought, "Oh shit, the first climactic moment of the story! I'm not sure how to translate this from my thoughts to paper, so I'll just introduce EVERYTHING all at one time as soon as I think of it! If it comes to me later in the story, I'll bring it up, and NOBODY will notice!" 
 Except I totally noticed. There were like ten things going on at once. I couldn't figure out what was going on in that car crash/insurance agency/Avery/random minivan/Retrocrap/magic/cheating parents scene. It made even less sense when it was explained again. Suddenly, all the characters lose their personalities and their ability to think past anything on a one-dimensional plane. Avery, who has this undeniable love for Zellie, decides she's a crazy-cray bitch-witch and wants nothing to do with her. 
 Because true romance is being unsupportive and assuming the worst of your partner. 
 Then all of the sudden, Zellie and friends are in Portland. With her aunt. And oh yeah, the magic stuff called "Retrocrap" [it's not really called that, it's actually called Retroact, but it was ridiculously craptastic] is sort of explained. But not really, because Zellie's long dead grandmother appears with like no fanfare and says she's still alive. Zellie just accepts this because hey, she doesn't bother questioning her parents for hating her or Avery for getting dumped and just up and leaves for Portland. 
 Then a lot of boring stuff happened. There's one instance of Retrocrapping, which involves Zellie turning back time [I guess?] without people knowing what's happening [I think?]. Ugh, just poor execution and planning all around. 
 Finally, we find out in about five pages that Zellie's mom cheated with Avery's dad--but only once, of course--and got preggers from that ONE TIME, and is now shacking up with Avery's dad's ghost. Avery's mom is in a mental hospital, and Zellie's dad just seems dandy about everything. Nobody really questions how shitty everyone else is, or why stuff that didn't get resolved years ago is only now being brought up. 
 But Zellie and Avery get back together, because none of the unexplained crazy shit that happened seemed to even cross their minds. What a totes presh ending. 
 My advice is to stay away from this book, unless you have some weird fetish for books that get worse over time, or if you just like feeling sick to your stomach.