Watchers....

In a certain house in a certain place lived the strangely fascinating Mrs. Mary. From the garden, three equally strange characters - G, S and C - watched Mrs. Mary day and night. In a parallel world, another observer watched the three watchers, while in yet a third dimension a lonely figure on a hill watched him. The lonely figure was observed by a group of men in a New York building, who were themselves subject to the scrutiny of a clairvoyant woman's seeking mind. And in a disused warehouse two young men and a boy watched the watchers who watched the watchers who watched, in their turn, yet other watchers, in a sinister chain of paradox...
Report on Probability A is a provokingly bizarre novel of relativity by one of the great masters of modern Science Fiction.