Still recovering from a break-up, English writer Anne (Lorna Heilbron) accepts an invitation from her friend Helen (Angela Pleasance) to spend time at her remote country estate. Once there, Anne notices the repressed Helen’s behavior becoming more possessive and unstable, and the search for the truth behind the disappearance of an earlier "guest" leads to a shocking─and potentially deadly─secret. Director José Ramón Larraz’s unsettling shock tale in the tradition of "Repulsion" also stars Peter Vaughan. 91 min. Widescreen; Soundtrack: English PCM mono; featurettes; interviews.