The Whole Class Is Spreading the Word, the Head Teacher Is Not a Living Person

On the first day when I transferred to Class 3, Grade 2, Linjiang No. 7 Middle School, the whole class was spreading one thing - Our class teacher Xu Qiulan died as early as last winter. But every night at 9:40, she would still walk into the classroom on time in high heels, holding the roll call sheet, and read out our names one by one. She only repeats one rule: After the evening self-study is over, no one is allowed to look back. At first, I just thought it was a boring weird thing in school. Until that night, there was an extra name on the roll call. And that name is exactly me. Since then, people in Class Three have been disappearing. The lights are on in the abandoned teaching building late at night, and torn old files are hidden in the teacher's office. The whole school seems to be trying desperately to cover up a secret. The more I investigated, the more I discovered that the truly terrifying thing may not be the "dead" head teacher at all. It's that a person who shouldn't exist has slipped into our class a long time ago.