Doctor Who series 8: Time Heist pictures revealed ahead of episode 5

There will be new faces as the Doctor and Clara take on a dangerous challenge

The Doctor (Peter Capaldi) and Clara (Jenna Coleman) in "Time Heist" (BBC)

Every week in the lead-up to the next episode of Doctor Who, the excitement gradually builds.

And now, with just three days to go until episode five airs, new pictures have been released to give fans a taster of what is to come.

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The forthcoming instalment, titled "Time Heist", sees the Doctor (Peter Capaldi) and his assistant Clara (Jenna Coleman) setting out to rob the bank of Karabraxos - the deadliest bank in the cosmos.

But of course their task is not easy – the pair must evade security and come face-to-face with the Teller, a creature that can detect guilt.

Viewers will also be introduced to Ms Delphox (played by guest star Keeley Hawes), whose role as the head of security renders her a woman to be reckoned with.

The countdown to the heist begins...

Doctor Who continues on Saturday 20 September on BBC One