At the end of Game of Thrones Season 4, Episode 9, “The Watchers on the Wall,” Jon Snow (Kit Harington) made the decision to venture beyond the Wall to meet with Mance Rayder, and kill him. It’s a suicide mission. As Sam points out, even if Jon gets to Mance, and kills him, he will also be killed. Jon knows this, but after everything that’s just happened, he just doesn’t seem to care.

“He’s a dead man walking,” Kit Harington tells TVLine about Jon. “Whatever emotion he did have is so distorted by what he feels he has to do at the end of Episode 9. I think he doesn’t expect to live. The thing about Jon is, every season, he’s walking the green mile to his death sentence, yet he keeps surviving. He’s used to it by this point, but this is such a low point for him. He’s so broken by everything that has happened in Episode 9 that I really didn’t think of emotions with it, really.”

Having Ygritte die in his arms seems to have affected Jon’s emotional core as well, with the character displaying a more hardened heart moving forward. “[Jon’s] very different after Ygritte's death,” Kit reveals to TV Guide. “You'll see in Episode 10 that her death changes him. He hardens all the way through. He's a very different person from how he was in Season 1. He's learning very tough lessons. He's always been practical, but he was a warm-hearted person. What I wanted to change in him was that warmness inside of him is gone. He's kind of stone-cold after that.”

Source: TVLine, TV Guide

Catch the Game of Thrones Season 4 finale on June 15, 2014 at 9 p.m. ET on HBO.