Let's write!

"Oi! You're on my foot , spaceman!" 

"Sorry!  Dropped the sonic screwdriver." 

"Doctor, when I said I wanted a holiday,  a cabin with a dodgy electrical system wasn't what I had in mind."

"Yeah sorry, used to be a fairly nice place. Well, that was back in the seventies. Or was it, the eighties?"

"Could you stop reminiscing and maybe work out how to get the power back on?"

"We're cut off.  And the storm is probably not helping." 

"How wizard.  Don't you have some sort of...Martian power crystal or something to fix it?"

"Martians don't really have power crystals. They're more...big green lizards."

"Well if you take me to Mars, I'll remember that. Now can you at least help find the kitchen in this place? Least we won't starve."

"It was just that-Donna, you might not want to move."

"Why? Is one of your big green Martian friends in here with us?"

"No but there's something...crawling on you."

"Just what I needed today." 

 Write a scene where the Doctor/companion/ other characters must escape from a situation or locate an important item,

But here's the catch- it's completely dark.