Diaphanous

The moonlight cut open Dave's eyelids and he sat up with a start, his room lit brightly in the midnight darkness by a strange sight. There before him was a woman, beautiful and fair, her eyes dark pools of starry sky, her hair long, and blonde, wafting gently in a breeze that wasn't there, and her gown was flowy, a diaphanous mesh that left just enough to the imagination to be provocative.

Dave slid backwards, resting his back against the wall as he pulled the covers up tight around his chin and watched the gorgeous figure before him gaze gracefully around, as if searching for something invisible. He studied her eyes when she happened to glance in his direction, and seemed drawn in by even the slightest catch of her eye. He slowly moved to the edge of the bed and slipped a foot onto the floor, cautiously standing up in his charcoal gray boxers and cleared his throat, immediately drawing the woman's attention.

"Um, hi. I'm not sure who you are or what you want, but, this is my house, and I'd appreciate it if you left."
She snaked her neck around a bit, her lithe movements slow and methodical, before in an instant she was upon him, with a strength hidden by her size. She held him against the wall and ran her eyes over him, briefly closing them and inhaling deeply just by his neck. He shivered slightly as her ice cold breath tickled his skin. Her fingers dug into the flesh of his bicep for a moment before she looked at him and smiled, revealing three rows of razor sharp teeth before flicking her tongue at him and letting him go. She sat down on his bed, the odd smile frozen on her face and watched him intently, waiting. He pulled himself up, rubbing his arm and the bruises she had given him. He once again sat on his bed as far from her as he could and continued to watch.

The odd woman reached to her back and with a gentle flick of her wrist undid a silver clasp that Dave hadn't noticed before, flinging the sheer garment she was wearing to the floor. With a long, lazy stretch she lay down on the bed, her body covered now with just the shadows that dared to creep back into the room. Her shimmering gown lay on the floor, glowing softly . Her attention seemed to be on something above her.

Dave's eyes traced her form, which was for all intents flawless. Her skin was sparkling when the light caught it just right, and Dave swore he could make out tiny scales covering her body. She suddenly sat up straight with a tense of her body and stared at him, sliding over the bed with inhuman flexing and stared into his eyes, all the while wearing that inhuman smile.

His attention squarely on the intruder, Dave failed to notice the shiny garment on the floor begin to stir...