Saw this recently and absolutely loved this movie!
The cinematography is absolutely gorgeous, creating a strong sense of place. The script is tight and there are some great performances from a strong cast of actors. The lead performance from the elder of the sisters is really compelling.
Overall the story is an intriguing mixture of influences - both traditional genre horror combined with more complex psychological elements. I don't want to post any spoilers but the story centres around a fractured family with a trauma in their past. This resurfaces with terrible consequences later in their lives.
Amazing quality and values for a supposedly 'low budget' production... The locations and special effects - and especially the cinematography - are like something only a major studio could afford.
An outstanding debut!
Would love to see it get a UK release so I can see it again.