Nora has long since come to terms with her astonishing journey to another world and back again, in search of a lost family she now chooses to leave behind after years of grief over having that decision taken out of her hands. That’s not really what this conversation is about, for her. It’s about whether she can ever get close to anyone again, or whether her peerless pain has rendered her separate from all of humanity basically forever. To find out, she has to face her fear of rejection by the human she once cared about most. She has to find out if Kevin Garvey believes her.
“I believe you,” he says, through a face so warped by emotion his skin seems to be sloughing off his skull on one side of his face. “You do?” she asks, stunned. “Why wouldn’t I believe you?” he replies. “You’re here.” “I’m here,” she confirms, to herself and to him, her hand in his, both of them smiling through tears.
It’s the final dialogue in the series, and it wouldn’t work nearly as well had we actually watched Nora’s trans-dimensional adventures. Here, we’re put in the same position as Kevin, whose own alternate-reality experiences the show has depicted in
lovingly bizarre detail, enhancing the contrast with the finale’s approach to Nora’s. We’re presented with the same information and asked to make the same decision. That, not the trip from world to world, is what The Leftovers wanted to show: a desperate person asking to be believed, and another desperate person believing.