Behind-the-scenes clip shows Tennant running away mid-scene in Doctor Who's 'Doomsday'

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A behind-the-scenes clip of the saddest moment from Doctor Who has resurfaced online... and I'm not sure I'll ever be able to look at it the same.

It's been 20 years since the BBC aired the Doctor Who season 2 episode 13 episode 'Doomsday,' in which the Doctor (David Tennant) and his companion Rose Tyler (Billie Piper) share a gutwrenching goodbye on a beach. That, and the scene that comes shortly after (where they're both trapped on other sides of a wall), has always been enough to make me cry just by thinking about it.

During the beach scene, the Doctor slowly fades away before he can tell Rose that he loves her back. But in a new behind-the-scenes clip from that same scene, Tennant stops mid-sentence, pauses, and then breaks into a cartoonish run away from Piper. You can check it out below.

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Rose Tyler appeared again in season 4 as a recurring character, and she and the Doctor do briefly reunite. She returned again in the 50th anniversary episode in 2013, and then again in the most recent scene in a way that was even baffling to the Fifteenth Doctor himself, Ncuti Gatwa. I n the last few moments of the finale, The Doctor regenerated into Piper , but the usual on-screen "introducing" text did not include "as the Doctor."

The fate of the show overall is more or less up in the air as Russell T Davies, who was the showrunner during the show's mid-2000s revival as well as the most recent season (which was confusingly rebranded as season 2 but is technically season 15), has left, and the previously announced Christmas special has been cancelled .

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