Director Douglas Mackinnon has chatted about what to expect from the next episode of Doctor Who‘s new series, ‘Time Heist’.

Written by Sherlock‘s Stephen Thompson and Steven Moffat, the episode airs at 7.30pm on Saturday 20 September on BBC One.

Mackinnon told The Daily Record: “What we wanted to do was a heist movie for Doctor Who. I’ve watched virtually every heist movie there’s ever been, and incorporates things into it, but because it’s Doctor Who, time travel is involved.”

He explained: “There’s a real time travel twist to it that’s quite amazing – it starts with the TARDIS in Clara’s flat, and the TARDIS phone starts ringing – very few people have that number, so when he picks up the phone, that’s when the adventure begins.”

The director added: “In traditional heist style, you get a gang together and each has a skill. One of the big things is, when the phone goes, they all arrive in this place and none of them can remember how they got there. They have to discover that as they travel, as they’ve involved in a bank raid but they don’t know what they’re trying to find.”

Watch the trailer…

The official synopsis reads: “The Doctor turns bank robber when he is given a task he cannot refuse – to steal from the most dangerous bank in the cosmos. With the help of a beautiful shape-shifter and cyber-augmented gamer, the Doctor and Clara must fight their way past deadly security and come face to face with the fearsome Teller: a creature of terrifying power that can detect guilt…”

> Here’s everything we know so far about Series 8.

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