In this scary story, a tenant shares the five terrifying rules of her apartment building. Rule 2: The elevator stops at floor 13. The building only has 12 floors. Rule 3: If you hear humming from the basement, do not investigate. Rule 4: The woman in unit 4B hasn't left her apartment in 30 years. Her food is delivered through a slot. She never speaks. Rule 5: If you see a child standing in the hallway, do not make eye contact. The tenant broke rule 3. She heard humming from the basement. She wishes she hadn't.