A terrifying nun with an unholy aura stands in the shadows, her presence haunting and unsettling. Her features are ghastly, with intricate details that emphasize her eerie and malevolent nature. The scene is captured with dramatic photography lighting, enhancing the dark and creepy atmosphere. The setting is photorealistic and cinematic, with a ghoul-like quality that makes her appear as an apparition from a nightmare. The composition is in 8k resolution, emphasizing the spine-chilling details, and framed in a 9:16 aspect ratio, drawing you into the unsettling world she inhabits.