Found footage has been done to death, but this is a lot more interesting than your usual shaky cam.

Decent premise with an intriguing antagonist.

Where this falls down is the documentary format of them cutting away to explain what happened. Plus the sad documentary music that plays over scenes where it doesn't belong and takes you out of the movie.

Watch this movie on home theater or Boom headphone in order to feel better sound effects. Just give a shot without second thoughts.

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.