Here’s our third daily picture from The Waters of Mars – get used to this because from what we can gather there’s quite a bit of running in the new episode of Doctor Who!

No disrespect of course, but Ms Duncan – seen here as Mars Bowie Base commander Adelaide – seems in pretty good shape for her years. She’s evidently in tip top condition… then again if you’re heading a mission to Mars, you would be wouldn’t you?

With just four days left to run until the UK premier of this new episode, Doctor Who fans young and old are gripped with anticipation after being repeatedly told that The Waters of Mars is a scary episode.

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Lindsay Duncan as Adelaide and David Tennant as the Doctor in The Waters of Mars