The opening scene of 28 Days Later sets up suspense and mystery. It begins in a dark, cramped room where a group of diverse survivors are barricaded with candles as their only light source. They seem scared of something outside but the audience does not know what. When a little boy enters, he hints at an unnatural threat outside. A zombie then breaks in, revealing the villains. The audience can infer the story takes place in the British countryside and follows the horror genre conventions of survivors threatened by murderous creatures. Key questions are left around why the group is hiding and what caused the zombie outbreak.