"Hey!" the fake Sarah yelled out into the hall. "Someone come quick! The shape-shifter is here! She's in the lab!"
"What are you doing?!" Sarah breathed.
"Using you as a diversion. While everyone's busy with you, I'll be in the records room erasing all of your files. Someone paid me a hefty sum of money to make sure you guys get set back by years, even decades."
Sarah was about to say something, but before she could, Agents Folmer and Willis showed up, drawing their guns.
"No, wait! Guys, it's me! Sarah!" she yelled, arms up in the air.
The fake Sarah turned towards the agents. "Don't listen to her. She'll do anything to get away."
"Get down on the ground!" Folmer yelled. It didn't take him long to realize that he didn't know this woman and that she didn't belong there. Despite looking like some sort of whore, she had no ID badge.
"I can prove that I'm Sarah!" she yelled.
"Get on the ground, now!" Folmer yelled again.
Seeing no other choice (she could run, but she'd surely get shot, maybe even killed), Sarah did as the agent asked. And as she did, the shape-shifter casually left the room and turned down the hallway.