Coach Jack had killed him. It. Because its blood was black. This was no prank.

After a long pause, Blaine and Kurt managed to release their death grips on each other. "What was that?" Blaine whispered.

Kurt splashed some cold water on his face. "What was what?"

"The thing! The monster!"

"I don't know what you're talking abou - AUGH!"

"It's a Silent. Nobody remembers one unless they're looking at it. Here." Coach Jack reached into his track jacket and pulled out a marker on a leather cord. "We should all make check marks on our skin so we know when we aren't looking - so that we know we saw one."

"I already did," Kurt said timidly, showing Coach Jack his open palm. "Doctor Song asked me to."

"Good. You too, Blaine. I've got a spare, so keep this one. We're dealing with a serious infestation of them."

Blaine took it. "You're one of the Men in Black, aren't you?"

Coach Jack looked startled for a moment, then laughed. "You two! You remind me of…"

"What?"

His face stilled. "I need to dispose of the body. I used to be the head of an agency. Similar to Men in Black. But real. Things happened. It's gone now, pretty much. But River Song and I have a mutual friend, a very good one, and they needed me to help."

"Are you gonna…mindwipe us?"

Blaine took Kurt's hand again and squeezed it. "The word is 'neuralize'."

"He's not actually in Men in Black, he said it was something similar."

"Cute. If the circumstances were different, maybe. But enough amnesia is going around as it is." Coach Jack adjusted the settings on the gun, which didn't look like any gun either Kurt or Blaine had ever seen. Made sense, really. Then he shot a beam that vaporized the body.

"Um, if you don't know you've seen a Silent unless you're looking at it, can blind people perceive them at all?" Kurt asked.

"No idea. Maybe if it said something." Then Coach Jack looked at his watch. "Damn. You boys need to go to your classes. I can't have people thinking I go for the underaged."

...

"I have study hall, and my teacher in that class disappeared yesterday, and I don't think she won the lottery," Kurt said.

"I want to hear an explanation," Blaine agreed.

Coach Jack took a deep breath. "Okay. Let's go to the bleachers to talk. If anyone asks, you're helping me set up hurdles for the track and field kids."

"Okay."

The coach looked at the ray gun/vaporizer, which was actually quite small and sort of rounded, as if he'd forgotten about it. "Why is this out here?"

"You have a gun!" Kurt gasped, putting his hands over his mouth.

"I've got a check mark on my arm. You two do as well. I must have just killed an evil alien. In any case, excuse me a moment while I hide this where it won't be found."

...

A few minutes later they were out on the bleachers. "The Silence don't tend to like bright, open spaces, though they can show up anywhere," Jack explained.

"Why are they here? What do they want?" Blaine asked.

Kurt clutched at his stomach. He was feeling queasy. "You said we reminded you of something, then you changed the subject."

"I..." A look of confused passed across Jack's face, and he rose to his feet and began to sing. He had an exquisite voice, filled with ancient sadness.

Look up

The ground below is grumbling

Look down

The stars are all exploding

It's the last day on Earth

In my dreams, in my dreams

It's the last day on Earth

And you've come back to me

Blaine started harmonizing, as was his habit, and Kurt added sweet backup.

Between the dust and the debris

There's a light

Surrounding you and me

A female voice joined in, with a different song that fitted in like a puzzle piece. Doctor Song was walking towards them.

You sit there in your heartache

Waiting on some beautiful boy to

To save you from your old ways

You preach forgiveness, watching out,

Here he comes!

He doesn't look a thing like Jesus,

But he talks like a gentleman,

Like you imagined when you were young...

Jack replied,

In my head I replay our conversations

Over and over till they're like hallucinations,

You know me: I love to lose my mind

Any time anybody speaks his name, I still feel the same

I ache, I ache, I ache, inside

Doctor Song approached him and clasped his shoulder.

They say the devil's water it ain't so sweet

You don't have to drink right now

But you can dip your feet once in a little while

Both the adults looked like they were going to cry. Something warm and expansive filled Kurt's chest, and he rose to his feet and pulled Blaine towards him.

When violet eyes get brighter

And heavy wings grow lighter

You'll see the sky and feel alive again

Jack wiped his eyes with the back of his hand and added,

And I'll forget the world that I knew

But still I won't forget you

Oh, if my voice could reach back to the past

I'd whisper in your ear:

"Oh darling, I wish you were here."

"I think we've got our confirmation," Doctor Song said when the moment had passed.

"Think it'll work?" Jack asked.

"The Doctor lies, but the TARDIS never does. Not to me, anyway."

Kurt was growing increasingly nervous. "What are you talking about?"

"There's no easy way to say this," Jack said. "And I can't believe I've had to do this more than once..."

Doctor Song looked apologetic. "You're an alien, Kurt. And precisely what we need right now."