Henry James 
The Turn of the Screw 

A great read for those who like horror stories, the book comes with unexpected and hair-raising turn of events that make it an absolute unputdownable. With the regular setup of the household, there are apparitions, that haunt the house and mysteries waiting to be unravelled. The story is about two children Miles and Flora and their governess who has been newly appointed to take care of the children in a secluded country home. She takes her duty of ensuring the well-being of the children as a calling and is constantly faced with the dilemma of whether she should leave or stay on and face the situation. Of course, she decides to stay and discovers more that she wishes to.