Penance

'Kanae Minato is a brilliant storyteller' Emily St John Mandel, author of Station ElevenWhen a group of young girls are approached by a stranger, they cannot know that the encounter will haunt them for the rest of their lives.Hours later, Emily is dead. The surviving girls alone can identify the killer. But not one of them remembers his face...Driven mad by grief, the victim's mother demands the girls find the murderer or else atone for their crimes. If they do neither, she will have her revenge