In the following days, Sarah didn't leave her apartment. When she was hungry, she would order takeout. Charles continued to lurk downstairs. Sometimes he would leave for a while but he would soon return. It seemed that he wouldn't leave until she went out to talk to him.

Sarah was tired of being confined to her home, so she called her friend to come over. When her friend came, they exchanged clothes. Then, Sarah went downstairs, wearing a cap. Charles saw a woman who was leaving the building, but he thought it was the woman who had walked in, so he didn't pay much attention to her. Therefore, Sarah successfully...