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Marco is a composer and singer who has somehow survived a suicide attempt. As he recovers, he attempts to find out when his political protest music began to lose its impact with the young. He was the "in" singer in 1968, a true rebel, admired and emulated. Now, just 10 years later, he is a has-been. He gains admittance into the bedrooms of a romantic threesome living in the house next to his, but their inarticulateness, or perhaps his own, maddens him, and he commits a heinous crime.