'Game of Thrones' Season 4 finale: Shae had no other choice, argues Sibel Kekilli

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Warning: Spoilers for the "Game of Thrones" Season 4 finale, "The Children," are contained in this article.

"Game of Thrones" viewers who were paying attention to the trailer HBO released on Feb. 16 were clued into the Shae twist that took place in June 15's Season 4 finale. A shot of Shae, dolled up in full prostitute regalia and lying on a luxurious bed, was snuck into the video, and it was a clear nod to viewers who knew her betrayal was coming.

Even actress Sibel Kekilli was shocked at the fact that image was included in such an early trailer. "It was not me! It was Oona Chaplin! She's coming back!" she jokes to Zap2it during an interview conducted at the Season 4 premiere, trying to deny that her character takes such a dark turn. "Pedro [Pascal], my colleague, said, 'I saw this face, and I knew exactly,' and I was really, really angry because of this face. Why did they put it in that in it?"

Still, the fact that Shae so deeply betrayed her love Tyrion Lannister by sleeping with his father Tywin, and then was killed by a heartbroken Tyrion, was one of the biggest shocks of the night's episode. Kekilli knew at the time that the Shae surprise would be "worse than the trial scene." But she also knows why Shae chose this as her path.

"I understand Shae. After the trial, what can she do? She has to stay alive, she can't leave now," Kekilli argues. "She has to somehow die or try to rescue her skin, to save herself. So what is she to do? She should have an affair with maybe the most powerful man in King's Landing."

Kekilli also thinks Tyrion is partly to blame for Shae turning against him. "She tried. She tried to saved, or to be safe in Tyrion's arms, in Tyrion's house, in Tyrion's home. So she tried, and she didn't get the safety," Kekilli says. "Again, she had to take care of herself. I think it's the most stupid step she could do, but at the same time, the most intelligent step she could do."

When Kekilli was cast in "Game of Thrones," she wasn't immediately informed about Shae's eventual death. But fans didn't keep her character's fate a secret for long.

"I didn't want to [know about the death], but all the super fans were like, 'You're gonna die! You're gonna die!' And like, 'Do you know, Sibel, your end?'" she recalls. "Even my friends, I was like, 'No, I don't want to know it.' 'You're gonna sleep the father,' and I was like, 'No I'm not. No.' 'Yes you do, Sibel!' Oh, Jesus."

She notes a bit sadly, "I was hoping that they were going to change it. ... I'm still hoping that I'll come back as a zombie."

Even up to her final day on set, Kekilli had a hard time coming to terms with the fact that Shae wouldn't come out of the shoot alive. "It was really hard. It was so hard. Even my last shooting day in Belfast, I was like, 'No, no, I'm going to die,'" she says. "I said to Dan and David, I'm not acting that. 'No, I will fight with Tyrion -- with Peter -- so maybe he's going to die. You never know.' They said, 'No Sibel, there is no excuse and there is no exit. You have to do that.'"

She continues, "It was really ... to see [Tyrion] catch her in the bed of his father and to see her again like a whore, this makeup, she looks a bit different and all this stuff -- it's heartbreaking. He didn't even expect her there. He just wanted to go to his father, and then she is his second love, the scene is really heartbreaking."

Like Jon Snow after the loss of Ygritte, Kekilli expects Tyrion to be forever changed by the fact he murdered Shae. "He will never trust every again," she says. "I think, if I would be Tyrion, I would never love ever again, because the first love was a trick because of Jaime, and he was really terribly in love with her, and now the second one."

"Game of Thrones" is renewed for both Seasons 5 and 6, and is expected to return in Spring 2015.
Photo/Video credit: HBO