Warning: This post contains spoilers forGame of Thrones.

Meera Reed may have left Winterfell to journey home in season 7 of Game of Thrones, but it seems likely we haven’t seen the last of Bran Stark‘s longtime protector.

“I don’t want to leave you, but when they come I need to be with my family,” she told Bran, referring to the White Walkers. “And you’re safe. Well, as safe as anyone can be now. You don’t need me anymore.”

However, Bran responded rather numbly to her goodbye, offering only an indifferent thank you for her years of sacrifice. “That’s all you’ve got to say?” she asked in disbelief. “Thank you? My brother [Jojen] died for you. Hodor and Summer died for you. I almost died for you.”

But while Meera may be upset over how deeply Bran was changed by his transformation into the Three-Eyed Raven, her return to Greywater Watch — the ancestral seat of House Reed — could potentially set in motion a chain of events crucial to the series’ end.

We know that Meera is the daughter of Howland Reed — the only survivor of the showdown at the Tower of Joy other than Ned Stark. It was once revealed during a season six flashback scene that Howland stabbed Ser Arthur Dayne in the back to prevent him from killing Ned in the battle — despite the fact that Ned always claimed he had personally defeated the legendary knight.

Considering what else happened at the Tower, Howland may be the only person alive who could testify that Jon Snow is not Ned’s illegitimate son but the child of Lyanna Stark and Rhaegar Targaryen — for those unwilling to take the word of a teenage boy claiming to be an all-knowing prophet.

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Howland apparently never told his children about his role in Robert’s Rebellion, but they seemed to be aware of his close friendship with Ned. Jojen even told Bran that the only time he ever saw his father cry was when he learned of Ned’s death. However, Howland hasn’t left Greywater Watch — a moving castle that can’t be reached by raven — since the Rebellion.

If Meera returns home and tells her father of everything she has seen and learned, he may realize it’s finally time to reveal the truth about Jon’s parentage. Or perhaps — as Reddit user ekky137 speculates from details in George R.R. Martin’s A Song of Ice and Fire series — he has just been waiting for his moment all along.

Howland Reed is obviously supposed to be the most mysterious, enigmatic character in the series. I understand that it’s supposed to be like this. He’s supposedly a great fighter, he’s supposedly so adept at magic he can move or disguise an entire castle in a bog, and a great friend of Eddard Stark. So great that he sent his only two children North to pledge their service to Robb Stark when all the trouble broke out. And then nothing. No word from him. There’s no chance in all seven hells that Howland Reed would stand for Roose Bolton after what he did at the Red Wedding. And yet he does nothing. What about the disappearance of his only two children? His beloved Meera and scrawny Jojen? He must’ve heard about the sacking of Winterfell, the ‘death’ of Bran and Rickon. He must certainly believe his children are either dead at the hands of the Ironborn/Boltons or on the run. And yet he does nothing. Not only that, but nobody in the entire series seems surprised by this at all…Whatever secrets Ned [kept about] what happened at the Tower of Joy, it is highly likely that Howland Reed also shares them and is likely heavily involved in them. He probably knows of Jon’s true parentage (R+L=J or otherwise). Characters in this series never fail to speak highly of him. They talk of how mysterious and great he is, but none ever question, even for a moment, why he he remains at the Neck doing nothing while Westeros collapses around him. All of this leads me to believe that in fact, Howland can’t be doing nothing. He’s up to something.

Howland Reed hasn’t appeared on the show in the present day yet, but it feels like it’s time for him to finally show his face.

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Write to Megan McCluskey at megan.mccluskey@time.com.