That night, eight years ago, my sister Annie disappeared. They searched for her, but in vain. Then I prepared for the worst. However, after forty-eight hours she returned. Annie didn’t want to say what happened to her and where she was... After returning, her sister became different. This was no longer my Annie. I was afraid of her and afraid to admit it... A little over a month ago I received a letter in the mail. Short phrase: “I know what happened to your sister. It's happening again." It seemed to me that my sister’s disappearance was the most terrible, the most terrible thing that could happen. But then I realized: the worst thing is that she came back...