Seems like 2014's been a great year for horror, at least, between this, Honeymoon, and Coherence. Much like Coherence, the premise of this is absolutely terrifying in a way not many horror films tend to be. The premise for this is simpler, and much more straight-forward, but it's quite effective. Some of the dialogue is a bit cringe-worthy, but right from the start the characters don't act like they've never seen a horror film, a lot more aware than you're used to in this type of film. The performances are also aces. What you don't know is way more frightening than what you do. I strongly recommend this, extremely entertaining and intriguing.
Review of Don't Blink
