Penance

When 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. She will make them pay... From the critically acclaimed author of Confessions, Penance is a dark and disturbing tale of revenge that will leave you reeling.