Sarah felt the rock grow warm in her hand. Then she looked at Jon. But instead she saw herself.
"What's wrong?" Jon (now Sarah) said.
"Jon, what happened?" she asked.
"Who's Jon? I'm Sarah" Jon said. She was identical to the original Sarah in every way, right down to the clothes. Suddenly the phone rang, and there was a voice from outside Jon's room. "Sarah, phone's for you!"
"Okay, thanks Sarah," Jon replied as he picked up the phone in his room (which Sarah (the original) noticed looked a lot like her own).
"Yeah? Okay, sure. Be there in a few, girl." Jon turned back to Sarah. "That was Sarah. She wants to go to the mall. Want to come with?"
The original Sarah stood there in silence a moment, then looked at the rock in her hand, and said...
