This is a thriller which can certainly be accurately described as original. It takes a fairly typical suspense story about a recently widowed father whose daughter vanishes one night and presents it in a most unique way. The whole film plays out on the computer screen via programs such as Facetime, iMessage, Gmail, Tumblr, Facebook, etc. In this way, it reflects the reality that so many people now live, given that so many nowadays are literally never off their devices. In this way, the film is completely relevant and taps into a scenario most will be able to clearly identify with. The conceit is also terrific in that it accentuates the mystery element of the story, where we stumble upon clues via the various social media platforms. The very limitations of the set-up ultimately amplify the material and take it to another level. I found it to be one of the most original, gripping and compelling thrillers I have seen in quite a while. Lead actor John Cho must be credited too with giving a strong central performance as the grieving father, with some good additional work from Debra Messing as the detective assigned to the case. All-in-all, a fantastic bit of work.