Sarah clenched her fists, which hung at her sides. She shouldn’t have said yes to the stranger. And now she’d have to get rid of her, somehow. “So, you’re looking for a Becca who looks similar to me but isn’t me...?” she prompted.

“You are Becca, you just don’t know it. You left me and Blake even though you promised you wouldn’t.”

“So, who are you, then?”

“I’m… I’m Brea, your girlfriend.”

Sarah narrowed her eyes. “And Blake?”

“Your boyfriend.” The woman paused, bringing her hand to her mouth. “Oh. Oh god, you really don’t recall anything, do you?” The colour in her face drained. “We thought… well, we thought you’d disappeared physically, but we never ever considered you’d disappear mentally, too.”

Sarah stared. “Nothing you’ve just said makes any sense. What do you want from me?”

“We were all happy together until your research became too successful and, well…” Brea looked down at the floor, lost in thought. She snapped her head back to stare at Sarah. “Do you really not remember?” Her eyes flashed with anger.

Sarah reached for her phone in the back pocket of her jeans. It had been there just moments before she’d answered the door but wasn’t in its usual place now. She took a small step back towards the kitchen, mentally mapping out the knives, hot sauce, anything that could be a weapon at close range. No, I’m a farmer, not a fighter.

“My name is Sarah,” she said, jaw firm to hide her nerves. “And I live here, with my nice quiet life. I think you should go.” She walked forward resolutely, blocking Brea and forcing her towards the front door.