Really, for me, this film stands out among all of 2014 by an intelligent story and excellent acting performance, but remains credible in every moment by the very good work as a director of Jaume Collet-Serrat from the Hollywood-produced uniformity.
To look at Amazon Prime Instant Video in a very good HD video quality and a very good sound quality. This is equivalent to - provided a good DSL connection (10 Mbit / s plus) - almost Blu-ray quality.
What I find truly great cinema, which can compete with Hollywood on the set absolutely (StudioCanal) but of the story is simply better - biting, intelligent, less pathetic.
Highly recommended.