Ryan Atwood had been sent to live with the Cohens after leaving his mother and abusive stepfather behind. Every day since, he carried the weight of guilt in his chest, haunted by the thought of his younger sister, only six years old, still trapped in that house without him. He had no idea how she was coping, or if she was even safe. The thought of her alone, scared, and abandoned had kept him up at night more times than he could count