This clever title is entirely appropriate, since the father (John Cho) spends this film looking for his lost teenage daughter on line. Also, because this is a screen-based film (everything takes place on some kind of screen: computers, cell phones, etc.). This could be considered a gimmick (like Unfriended in 2015), but this has several things going for it. First, it’s a well-written mystery that would work without the concept, but becomes even more interesting with it. The superb editing and innovative approaches to storytelling (plus Cho’s performance) elevate this film into a smart, creative thriller.