Mary exited her room and crawled along the ceiling to the foyer. Her roommate Beth was there, taking off her shoes. Mary smiled, showing her fangs. "Hi, Beth."
Beth looked up and saw the monstrous spider-thing with her roommate's torso. She started to scream, but was cut off when it jumped on her and sank its fangs into her neck. The last thing she saw before she passed out was Mary's mutated face smiling at her.
Mary carefully encased Beth in a cocoon, then went back to decorating the house. She knew that Beth would complete her changes in a few hours.