As soon as the blue line appeared, I immediately thought of "lost" and "under the dome", two other shows where people are trapped someplace and there is some mysterious danger they must avoid.
This is very poorly written because there are lots of scenes where the simple question of "why" is never asked and that's how they string us along like they have done before.
It's not natural for humans not to ask obvious questions.
It takes more than some spooky music to not notice how lazy the writing is.
This show has potential because of the tension between the characters but the isolation/mystery element is just another run at an island or a dome.
I'll still watch it but the slow pace won't keep my attention for too long. It's too boring at this pace, and I am not as dumb as they must take me for.