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Maisie Williams may have dropped a big spoiler about "Game of Thrones" season 6. The actress who stars as Arya Stark revealed that another long-lost character would appear in the current season of the HBO drama series.

"Yes, we will indeed," the actress said during an interview on BBC Radio 1 when asked if viewers would learn what has happened to her on-screen brother Rickon (Art Parkinson) this season. Realizing what she had said, Williams exclaimed, "Oh no, I'm literally going to go off the air and someone's going to email me!"

Rickon, the youngest of the Stark children, was last seen in the Red Wedding episode in season 3. He and Bran took different paths when they realized that he could not accompany Bran on his journey. Rickon and Osha (Natalia Tena) took off to find safety at Last Hearth.

As we have known, Jon Snow (Kit Harington) who was stabbed in the fifth season finale was resurrected in the latest episode. The actor says death changes his character. "There's a brilliant line when Melisandre asks: 'What did you see?' And he says: 'Nothing, there was nothing at all.' That cuts right to our deepest fear, that there's nothing after death. And that's the most important line in the whole season for me," Harington reveals to EW.

He continues, "Jon's never been afraid of death, and that's made him a strong and honorable person. He realizes something about his life now: He has to live it, because that's all there is. He's been over the line and there's nothing there. And that changes him. It literally puts the fear of god into him. He's seen oblivion and that's got to change somebody in the most fundamental way there is. He doesn't want to die ever again. But if he does, he doesn't want to be brought back."

"Game of Thrones" airs Sundays at 9/8c on HBO.