Mr Cave is a dealer in antiques. He lives above the shop with his daughter Bryony, whose twin brother Reuben recently died after an incident for which Mr Cave, quite wrongly, blames one of the boy's friends, Denny. Bryony is around 15 and since the death of her brother Mr Cave has introduced a long list of rules designed to protect her. Bryony has an ally in Cynthia, sister of the children's mother who died when the twins were small. Mr Cave has ideas which do not countenance any ordinary future for his daughter. He narrates throughout and we are in no doubt as to his opinions. His daughter has always been special, a serene and beautiful girl who plays the cello like an angel. It is obvious to Mr Cave that she is destined for a prestigious future.
We learn that Reuben has always taken second place in their father's thinking. Where Bryony got a horse, Reuben, who had a birthmark on his face, was lucky to get a bicycle. But things aren't going as Mr Cave feels they should. The ordinary pressure points of a teenager's life - sex, status, friendships and clothes - are beyond his fathoming. Sometimes he feels as if Reuben has come back and is haunting him, directing him towards certain activities which threaten to erupt in violence.
This is all oddly enjoyable, even though Mr Cave is not a likeable person and his attempts to manage (though he would say "protect") his daughter are catastrophically ill-advised. Inevitably there is a climactic night of disaster. We necessarily see everything from Mr Cave's point of view and as a result we don't get much chance to develop much feeling for the other characters. This is Mr Cave's disaster, and one feels he will never really recover. It's a very good read, particularly valuable for over-protective fathers.