Warning: The following article contains potential spoilers for Game of Thrones' eighth and final season.
Some big news about Ellie Kendrick's involvement in the final season of Game of Thrones seemingly throws a spanner in one of the show's most bizarre fan theories.
There is a fairly vocal contingent of Game of Thrones fans who firmly believe that Ellie's character Meera Reed and Jon Snow (Kit Harington) are actually twins, who were both born to Lyanna Stark shortly before her death at the Tower of Joy.
Fans believe this because Jon's father (who is actually his uncle) Ned Stark and Meera's father Howland Reed were the last survivors of the battle at the Tower of Joy.
When you add in that George RR Martin's books also identify Meera and Jon as being the exact same age, this seemingly-wacky theory gets a bit more credible.
However, the prospects of this theory paying off are much murkier because Ellie Kendrick has claimed that Game of Thrones producers haven't invited her back for the final season yet.
"I don't know [if I'll be back]," she told Metro. "It's funny because I always get asked, 'What's going to happen? Are you in it?'
"Genuinely, the truth is I don't know. I wait for the phone to ring and then I find out, but it hasn't rung so I don't know. I'll find out whether I am or not at some point, but for now I haven't been notified so I'm yet to discover."
Hopefully someone clues Ellie in soon because the main cast have already started shooting their final episodes, in a production schedule expected to stretch well into next year.
Last we saw her character Meera, she was giving up her full-time job of lugging Bran Stark (Isaac Hempstead Wright) through the North, now that she'd finally got him back to Winterfell.
"It was a sad day to say farewell to young Isaac – not so young now and also very tall, which means he was so difficult to put on the sled, which I actually did, although he's a lot taller than me," she quipped.
"So while I was sad to say farewell, I was also slightly relieved for my spine because I no longer have to be dragging him across any wintered land. I genuinely did drag him.
"Not all the time, because in really wide shots there was a dummy version of him. But I did a lot of dragging. No dragon, just a lot of dragging. I got a very strong back by the end of it.'"
Honestly, it's probably only fair to make Meera the secret twin sister of Jon Snow just so she has something to show for all that lower-back pain.
Game of Thrones' final season isn't expected to air until 2019, leaving you plenty of time to keep brainstorming.
