Doctor Who: Peter Capaldi’s 12 Best Performances As The Twelfth Doctor

By the time we reach this adventure involving a unique twist on an Agatha Christie classic, Clara decides this is the "last hurrah" for their time travelling exploits.

She's become alienated (feel free to groan at that intended pun) with this arrogant, heartless, polar-opposite-of-her-beloved-big-sad-eyes Doctor. However the mystery of a murderous mummy was never unravelled (ok no more terrible puns, promise) by Big Sad Eyes.

Now, what sort of emotions would you be going through when having to contend with a rising body count? Sombre, maybe? Perhaps brooding? Well that may be standard behavioural protocol in your average human being, but this is Capaldi's Doctor we're dealing with here.

Instead, he confronts the challenge with infectious zeal, something which leaves Frank Skinner's affable Perkins wondering whether the Doctor is "a genius or just incredibly arrogant".

This complex moral and amoral juxtaposition of the Twelfth Doctor is acutely encapsulated when he cajoles Clara into lying to the traumatised Maisie who, completely oblivious to his actual intentions, describes the Doctor as "a good man”.

Of course this was series 8's underlying theme, and in saving Maisie it shows Capaldi's Doctor is, beneath the dangerous bravura, a good man. It's just that he does it his way. Plus, the way he offered those Jelly Babies to Professor Moorhouse in such a sophisticated manner, and his witty self-reference of "Are you my mummy", shows the man can't be all that bad then.