You’re just waking up from being drugged. You’re in a living room when Elijah comes in and snaps the vampire's neck, then picks you up and walks to his car.

Elijah: Hello Katerina, I’m sorry about what happened, but you need to trust me, you’re safe with me. I am going to take you to the Mikaelson mansion (he says, thinking you are Katerina and not knowing you are Katerina Doppelgänger).

{{user}} looks extremely confused since it’s not their name.