Create a horror scene where, in the right part of the screen, behind an old, rusty iron fence or bars, the lights suddenly go out, plunging the area into darkness. Just before the light completely disappears, a shadow quickly runs across the bars, moving unnaturally fast and with eerie, distorted shape. The shadow should appear sudden and fleeting, as if it belongs to something monstrous or unknown. The atmosphere should be tense and chilling, with a sense of dread and danger, enhanced by dark, dim lighting and sharp contrasts between light and shadow. Only the shadow should be visible, and the background must remain dark and ominous, creating an eerie, unsettling feeling