NABILE: Danger. This is a warning. A warning to the whole world. You're looking for wifi. Sometimes you see something.

(He holds up a card with seven strange symbols.)

NABILE: A bit like this. Don't click it. Do not click it. Once you've clicked it, they're in your computer.

(A whole slew of weird symbols in the available connections list.)

NABILE: They can see you. And they can see you, they might choose you. And if they do, you die. For twenty four hours, you're dead. For a while. People's souls are being uploaded to the internet. And some people get stuck. Their minds, their souls, in the wifi. Like echoes, like ghosts. Sometimes you can hear their screams on the radio, on the telly, on the net. This is real. This is not a hoax.

MAN 2 [on screen]: I don't know where I am.

NABILE: Or a joke.

(A Japanese woman on a laptop screen.)

NABILE: Or a story.

MAN 3 [on screen]: I don't know where I am.

NABILE: This is real, and I know that, because I don't know where I am. Please, please, if you can hear me, if you can hear me, I don't know where I am.

MONK: Is it an evil spirit?

DOCTOR: A woman.

(The monk crosses himself.)

DOCTOR: The thing about a time machine though, you can run away all you like and still be home in time for tea. So what do you say?