Brrrrrr! It's winter, so we thought we'd tie in with the season and do a story set in the snow.

So, brace yourself, get your anti-gravity ski boots on, and prepare for some extreme wintersports on the Martian moon of Phobos. There's nothing to fear... is there?

We look at this Eighth Doctor and Lucie adventure, as we chat with author Eddie Robson, and guest star Tim Sutton.

Also, find out what Becca and Kenny's biggest fears are too!