"Almost every species in the universe has an irrational fear of the dark," muses the Doctor as he sweeps a torch through the darkened library, Donna at his side. "But they're wrong. Because it's not irrational."
Wilfred Mott looks at the night sky in horror. "They're going out... oh my god... the stars are going out!"
And they are.
A familiar blonde with a big, big gun strides through the ruins of a street as explosions go off.
"Rose is coming back. No matter what's happening, isn't that good?" asks Donna by the TARDIS console.
The Doctor looks up. Meets her gaze. And then a giddy expression crosses his face. "Yeah," he gasps.
"The real world is a lie," says the black man in spectacles. "And your nightmares are real."
"Not everyone comes back out of the dark," the Doctor tells Donna as they run through the library, slamming doors as skeletons in gleaming white spacesuits emerge from the shadows, firing blue rays.
"It's coming for me!" screams a helpless some as a spacecraft is buffeted out of control.
"Stay in the light!" the Doctor shouts.
"Stop it! Why are you doing this?!" wails Donna, in a suburban park.
"Don't you play games with me," the Doctor snarls. "We're going to get out of here, I promise!"
Daleks. Lots of Daleks. Aboard the Valiant. And in control.
Rose Tyler looks upwards, unfazed. "Right. Now we're in trouble."
The TARDIS is ablaze.
"And it's only just beginning," concludes Rose.
In the heart of the Dalek stronghold, there is something new. Something like a Dalek, but from the midsection upwards is lost in darkness, bar a spot of blue light at the top.
"It's coming, Donna," says Rose quietly. "It's coming from across the stars. And nothing can stop it."
"What is?" demands Donna, finally losing her patience.
Rose looks at her, scared stiff. "The darkness..."
Silence in the Library
Forest of the Dead
Eye of the Storm
SNEED: Echoes in the dark.
GWYNETH: The things you've seen. The Darkness.
MICKEY: See, they've known about aliens for years. They just kept us in the dark.
DOCTOR: Mickey, you were born in the dark.
DALEK: I can ... feel... so many ideas, so much darkness.
ANGELO: It's almost dark.
MICKEY: It was dark!
ROSE: Where are you from, the dark ages?
RICKY: I bet they can see in the dark—
DOCTOR: You, Mr Connolly, are staring into a deep, dark pit of trouble.
DOCTOR: A living shadow in the darkness.
ELTON: But the truth is, the world is so much stranger than that. It's so much darker.
DOCTOR: No light, no dark, no up, no down.
DOCTOR: The Racnoss come from the Dark Times, billions of years ago, billions.
SWALES: It's dark.
FLORENCE: You're quite the funny man. And yet, I think, laughing on purpose at the darkness.
LILITH: The Eternals found the right word to banish us into deep darkness.
DALEK: Humankind is weak. You shelter from the dark.
DOCTOR: Yeah, I found one of your experiments. Just left to die out there in the dark.
TALLULAH: There ain’t nothin’ more creepy than a theatre in the dark.
DOCTOR: The only creature who might have led you out of the darkness.
VOICES IN THE WATCH: The darkness is coming... keep me away from the force and empty man...the last of the Time Lords, the last of a wise and ancient race... Hold me. Keep me safe. Keep me dark. Keep me closed. The time is not right.
MARTHA: Sometimes when you look in his eyes you know - you just know that there's something else in there. Something hidden. Right behind the eyes, something hidden away. In the dark.
DOCTOR: There was a time when the universe was so much smaller than it is now. A darker, older time of chaos.
TOCLAFANE: We have to escape. Because it’s coming, sir. The darkness, the never-ending darkness. The terrible, terrible cold. We have to run and run and run!
MASTER: You should have seen it, Doctor. Furnaces, burning. The last of humanity screaming at the dark.
DOCTOR: The wind is felt most keenly in the dark.
LUCIUS: Ah. But what is the dark, other than an omen of the sun?