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The literal translation of the German title is "Pairings." Alice (Lilli Palmer) and Edgar (Paul Verhoeven) are a married couple who have argued during most of their 20-year marriage. Alice's cousin Kurt (Karl Michael Volger) arrives to visit them in the North Sea island home after an extended stay in the United States. Kurt tries to help the psychotic, dysfunctional couple with their problems, but he soon has trouble of his own when he finds out they are into satanic rituals. The kindly cousin is battered by the mood swings of the malevolent married couple.