The novel deals with the significance of two connected events that happened on the same day, long before the opening of the novel. The first was the excavation of an ancient and valuable archaeological idol, a phallic figure unearthed from the tomb of an Anglo-Saxon bishop Eorpwald, known as the "Melpham excavation". Gerald has long been haunted by a drunken revelation by his friend Gilbert, who was involved with this excavation, that the whole thing was a hoax perpetrated to embarrass Gilbert's father. Gilbert told Gerald that he put the idol there. Gerald, while feeling that his friend was telling the truth, pushed the matter to the back of his mind and tried to forget about it. He now feels ashamed that he, a history professor, has never had the courage to try to resolve the matter one way or another.