Sixpeopleboundtogetherbyatraumaticexperiencedecidetoroundoffayearofgrouptherapyinstyle.Theyjoineachotheroncemore,travelinguptotheScottishLowlandsforareunionweekendina1970sholidaylet.Soonanumberofmysteriousandhorrifyingeventsstarttoexposethecracksintheirrelationships,andonebyonetheydiscoverthattrustrunsbutskin-deep.Anightofclosureturnsouttobefarmorefinalthantheycouldhaveanticipated.
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