Ethereal mermaid emerging from a misty lake, her scales glistening wet in the dim light, surrounded by an aura of mystery and dark allure. She possesses an eerie, otherworldly beauty, with intricate designs and haunting details that hint at an unholy presence. Her eyes are captivating yet unnerving, embodying a creepy, siren-like terror. The setting is enveloped in shadow, illuminated by dramatic, cinematic lighting that casts an atmospheric, photorealistic scene in 8k quality, capturing the intricate textures of the forest that mirrors off the water's surface, and the haunting, spectral mood of the moment.