Durkin, a relative youngster who won the directing award at Sundance for his first feature, showcases a remarkable talent in this story of a young woman's attempt to break free from the clutches of a cult.
The film abounds in boldly framed shots and eerily handsome visual touches and it weaves together its two time-frames with considerable skill.
But it never really gets to grips with the story it's trying to tell, and the ambiguous ending, though doubtless intended as a stylistic flourish, comes across more as a failure of nerve.
As the film opens, the title character, originally named Martha (Olsen), is seen fleeing at dawn from a commune in the Catskill mountains and ending up at the home of her uptight but kind-hearted sister Lucy (Paulson) and her bristly British architect husband Ted (Dancy).
Through repeated flashbacks, we see the past she is struggling to come to terms with: the back-to-nature community is led by a self-appointed guru Patrick (Hawkes), who runs things along almost medievally sexist lines - the women eat after the men and Patrick sexually assaults newcomer women in a ritual fashion that is regarded as some sort of benediction.
