okay and nothing much to say here that hasn not already be say by all the other good reviewer on here . director do a crack job of build up a sense of tension and isolation and paranoia in the first half of the film . beautiful and haunt location shot and spot on musical score and some clever camera work . undoubted nod to the like of the thing and blair with project and the shining but the director still manage to plant enough plot device ( mysterious white box and weird noise and footprint and well acted descent into madness ) to promise a worthwhile outcome . sadly and at this point they run out of idea . in fact if i do not know good and i would almost have think that they switch director about two third in . particular gripe represent 1 ) rubbish cgi . you do not need a monster to make your movie scary . especially when it some sort of reject from rocky and bullwinkle . 2 ) the whole final scene . be watch resident evil have we . the very final shot scream that they completely run out of money and couldn not afford to do the apocalyptic wide angle shot that be need here . 3 ) poorly do switch in pace . about two third in we go from slow and deliberate menace to frantic and unexplained chaos . handle well this might have work . it do not . read this back it sound really negative and that not the impression i want to give . this be a decent movie and i suppose my annoyance be that it wasn not as good a it easily could have be give a bit more care and thought .