Robert Forester, depressed after a painful divorce, begins to spy on Jenny, his pretty young neighbour. Watching her, bright and seemingly carefree, alleviates his loneliness and helps him escape the discontent of his life. Caught in the act, he is surprised when Jenny invites him in, but all is not what it seems. With striking clarity and horrible inevitability, Forester becomes caught up in a series of deaths in which he, although the innocent bystander, is presumed guilty.
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