The companion, who has returned this season to team up with the Doctor (Ncuti Gatwa) and Belinda (Varada Sethu), departed the TARDIS in emotional scenes last year when she was reunited with her birth mother – but now, fans have wondered if there might be more to that story.
Now, in scenes from upcoming episode Wish World, the Rani (played by Archie Panjabi) is seen rocking a very similar cloak. Could there be any link between the pair?
Intriguing! While she's staying tight-lipped on that particular thread, Gibson also gave us more of an insight into what we can expect from the mysterious upcoming episode Wish World, which will see the Doctor and Belinda arrive home to a very different world than the one they left.
"Russell has cooked up an incredible finale," she teased. "I think it has everything that a Whovian would wish for in the Wish World!"
"It's got everything that everyone will hope for. It's so hard to narrow down in such a small summary, because it's just full of absolute drama and war and repair, and I'm just so grateful to be a part of it, really."
The last time we saw Ruby, she was left a little broken and in need of some time for herself following her encounter with the villainous Conrad Clark (Jonah Hauer-King) in Lucky Day – but now, she has a key role to play in Wish World.
"She's the only one that has this sort of distorted reality where she knows the truth."
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