Let Me In.

Jessica is having a wonderful family game night with her husband Rod, her stepson David, and David's girlfriend Amy. Everything seems to be wholesome and going great until there's an unexpected knock at the door. Jessica excuses herself to cheerfully answer the door, then gets the shock of her life when she sees another woman smirking back at her. It's like looking in a mirror... and it's clear from the horror on Jessica's face that she doesn't like who is looking back at her. It seems like the past has caught up with Jessica and she's about to ruin every relationship she has with her family... and the relationship she has with herself.