Kristin had had a pretty horrible trip so far. While she loved studying and observing the wildlife, most of the other students ignored her completely. She spent most of the time on the cruise ship in her cabin watching TV. She was happy to finally be returning home to her parents.
After getting her passport checked, Kristin decided to go to the bathroom. She followed a familiar looking girl into the ladies room. "Probably one of the other students on this lame trip," she thought to herself. While the girl went into one stall, Kristin just washed her hands and stared at herself in the mirror, feeling disappointed by the entire trip. Suddenly, the stall door opened and to Kristin's surprise, an entirely different woman was standing there. Shocked, Kristin splashed some water on her face, thinking she was only seeing things. After drying her face, Kristin did a double-take only to realize that indeed, a student had gone into the stall only to come out looking like a completely different, older woman.
When this strange woman left the bathroom, Kristin decided to follow her, for curiousity had gotten the better of her.