Jon goes to Sarah's house her car is here, but not the one of her parents, perfect.
Jon look around the house to find her near the pool, taking a sunbath.
First Jon put away her vocal cords so she won't alert anyone. Then he makes her feets and legs under the knees disapear, that's when she notice something was wrong.
She make a silent scream when she see her half diapeared legs. Noticing the absence of sound she put a hand on her mouth. But she notice, they have disapeared too. She try to crawl when you make your entrance.
She look at you with tears on her cheeks, not knowing if come for help or makes everything worse.
But you answer to her silent question by unzipping your pants and...