The Turn of the Key was a surprisingly good book. The story is told from the point of view of a woman in prison who is writing letters to a famous lawyer asking him to take her case. She claims that she is innocent and realizes that she made a mistake by not being fully truthful and complete when she told her story to the police and thinks that if she had fully explained then things might have gone differently for her. Thus begins a series of letters that tell the full story.
There is a slow reveal of a woman who is hired to be the nanny of three children at a remote Scottish estate. The parents are called away and the new nanny is on her own. The family has gone through a number of nannies and have trouble keeping one to stay because there are stories that the house is haunted, because the children are troubled, and because it is a high-tech house with cameras everywhere, and other reasons.
At the beginning of the story I was doubtful about the format, but as it progressed I was drawn in. I thought the ending came a bit quickly, given the long build up, but it was a surprise that brought everything together. I listened to the audio version of the book and the reader did a good job.