She'd been excited about the evening's outing. As she started undress, she thought about all the friends she hadn't seen in years. She was so engrossed in her thoughts that she didn't hear the intruder enter the bathroom from behind. Eventually, she sensed his presence but it was too late. As she turned around to face him, he stabbed her in the chest. It took her completely be surprise, causing her to stumble and crash backward on the long bench and hitting her head on the tub behind her. 

As her life withered away, her attacker casually stepped out of the bathroom into the unknown. It wouldn't be until a hour when her sister came to check up on her ...