Let's try facts instead of paid positive reviewers. (1.) Over 50% of the movie is composed of "talking heads". You don't know what talking heads are? It's a cheap production technique where all you see is someone's head talking to the camera; often in a monotonic pseudo-documentary style to save a money, cover a lack of the following: acting, sets, props, plot and to lend a deceiving sense of credibility to a story. (2.) The Blair copycat formula of poorly lit places with shaky cameras e.g. Quarantine, (Rec), Poughkeepsie Tapes, Wicksboro Incident. (3.) Storyline is of the usual investigators of a make believe or highly exaggerated haunted "whatever" story. This one's a subway. (4.) Over 40% is the isolated claustrophobic running nowhere as seen from the point of view of a camera (or two). In this case, as is usual, we have normal lighting which seems to randomly switch off followed by viewing through a low light camera. If watching the walls of a subway tunnel is exciting then this is time well spent. (5.) Scary part is always very brief, in this case, just seconds. A very blurry figure that likes to make groaning sounds (how creative) and snatches someone so quickly it is also just a blur. (6.) Ends with usual talking heads' actors telling us how frightening it all was followed by few lines in credits telling us who lives on and who just disappeared.