Answer:
Give the background: setting, time of year, main characters. So you could say Sally, suzie, and bobbie were sitting on the couch when there was mysterious thud against the door. When sally opened the door there were normal people who had gone rogue, they were tearing the flesh of other human beings apart. But bobbie had seen this before, for in the middle of winter, a zombie apocalypse has broken out.
Explanation:
