it a positive review, saying "What makes this film work so well is the effectiveness with which it preserves the ambiguity of the situation for most of its running time." Todd Martin of HORRORNEWS.net also received it positively, saying that "the big twist is nothing short of awesome." He tempered that by describing the first thirty minutes of the film as "very boring and slow-moving". The film received negative reviews also, with Adam Cook writing "Not only does the film fail to mix things up but it also fails to wring any tension from the scenario or adequately play with the fractured mental state of the characters." DiscDish also reviewed it negatively, writing "The plot is ridiculous, the scenes predictable, the “horror” factor laughable. But then, what else would you expect?" References External links 2010 films 2010 horror films 2010 psychological thriller films British horror films Remakes of British films Films about dissociative identity disorder Films about stalking Films about writers Films set in country houses Horror film remakes 2010s psychological horror films British serial killer films British slasher films 2010s English-language films 2010s British films