This film is now on 'general release' in the UK - in reality only a handful of cinemas in cities over the next 2 weeks.
It is also out in Australia:www.howiendedthissummer.com.au/
An extract from an internet review that sums it up without giving too much of the plot away:
How I Ended this Summer has all the makings of a more conventional cat-and-mouse thriller, and may disappoint anybody who wants, or has been led to expect that kind of film, but it’s a subtler, more surprising and nuanced piece of work than that. It’s a film about character where dialogue has been stripped to the bone, where body language and gesture speak volumes, and the fractious relationship of distrust and lousy communication rings wholly true. It’s a film about temperament and time and territory, clearly shot in arduous conditions in a bleak and breathtaking landscape.