Sorry, this episode is not currently available

Episode 2

Investigating the old mine workings, Jo and miner Bert become trapped beneath the surface when the lift is sabotaged. Bert touches some green slime and becomes infected.

Release date:

25 minutes

Last on

Sun 9 Jan 1994 12:00
BBC Two except East, South East, Yorkshire

Series 10: The Videos!

The making of Smile

See the behind-the-scenes videos, interviews, clips and other goodies!

It's Time for Class

Class Iconic

Binge watch the entire first series now (may not be suitable for younger audiences).

Follow Doctor Who on Social Media

The making of Smile

For the latest news, photos, videos and more, follow us on:

Doctor Who Game Maker

Doctor Who Game Maker

Create and play your own amazing adventures in time and space!

TARDIS Index Files

TARDIS Index Files

Find out what the TARDIS has on file about the Sontarans.

Buy online

Buy online

Available on: DVD or Video download

From suppliers including: BBC Store, iTunes

Where to buy