Eldritch, otherworldly horror, ancient tome-bound knowledge, mysterious ritualistic symbols, eerie glowing runes, dimly lit abandoned asylum, crumbling stone walls, flickering fluorescent lights, worn-out medical equipment, sinister rusty surgical tools, grotesque anatomical diagrams, haunted possessed victim, twisted elongated body, bulging eyes, pale skin, tattered white hospital gown, eerie whispers, unsettling ambient sounds, ominous low-frequency hum, 3/4 composition, close-up on ancient texts, atmospheric fog, dark misty background, cinematic lighting.