I give this one closer to a 3.75. 
 On the plus side - this one was so easy to get into and I didn't want to stop reading it. I liked the main character, was rooting for her the whole time. She's got a lot of emotional baggage and hides it with heaping doses of sarcasm, but it didn't stray into "too bitter" territory for me (a fine line with prickly characters). I liked the other characters, the hidden societies of people with "superpowers". THis one deals with time travel - usually this "power" makes my head hurt and I dislike reading about it, but I liked the way McEntire handled it. A lot of setup and some decent action at the end. I will definitely read the next one. 
 The detractions come from the love triangle that felt thrown in. By the end of the book, I got it, it made more sense, but at the time it just felt uncomfortable [side note: I don't have a problem with love triangles in general, just when they don't feel organic for me in the storyline.] I also had a problem with the parental figures - in this case, the MC's older brother (they're orphans). It was so hot and cold, on the one hand he admits she's almost 18 so it's time for her to start making her own choices, but then he punishes her for making her own choices. Another thing that didn't feel quite right or fleshed out. 
 Altogether, though, I really enjoyed this one. Recommended if you like YA with romance and the paranormal.