Now that Bill Potts is officially aboard the TARDIS, it’s full steam ahead to see the universe anew. And next week’s episode will definitely make you Smile…

In the far future, at the edge of the galaxy, there is a gleaming, perfect city. This brand new human settlement is said to hold the secret of human happiness – but the only smiles the Doctor and Bill can find are on a pile of grinning skulls. Something is alive in the walls, and the emojibots are watching from the shadows, as the Doctor and Bill try to unravel a terrifying mystery.

Smile, written by Frank Cottrell Boyce, airs on Saturday 22nd April at 7:20pm on BBC One.

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