The first thing Tony says when they come down to breakfast the morning after moving into the Tower is, “So, you two are together, right?”

Gabriel has a way out, if he can just get the gods on his side.

Sherlock has just run off in a whirlwind of coat without a word, leaving Scotland Yard cursing his name. It’ll be a while before they can get someone to translate this, and meanwhile that tall know-it-all bastard has gone off to do god-knows-what without bothering to even tell them what the note says. John edges forward in the middle of the uproar, and surreptitiously glances at the note. Androvy, it says briefly. The warehouse at five. Serdyukov. John seems like such an ordinary bloke. Appearances can be deceptive.

Apparently Supernatural was real, which was presumably why Gabriel was bleeding out onto Richard’s floor. (In which the actors of Supernatural find that reality is stranger and more disturbing than they previously believed, even counting Misha, and an injured archangel discovers that his universe is the subject of a TV show.)

“You’re Captain America!” I said, because he was. “Uh, hulloooo, standing right here,” Tony told me. He was using his obnoxious voice. “I know you’re there,” I said. “But Captain America! You didn’t tell me Captain America was going to be here!” A sequel to 'A Connection Is a Thing Which Requires Maintenance.'

The thing that made it so easy to hide was that everyone knew what dragons were supposed to be like. John heard people wonder about Sherlock sometimes, sending him slanting, speculative glances, as they questioned his lineage. But John Watson, who was steady, reliable, even-tempered? He slid right under their radar, just another average human being in a world full of them.

“Eternity is really rather boring, John. Mortal life seemed as though it would be far more interesting.” Sherlock is actually the Devil, but he decided to live as a mortal because ruling Hell was boring.

Years later, Tony meets Harley Keener at a science and engineering fair.

What if Castiel had taken a different vessel?

Her name isn’t really Darcy, of course: her true name is something much older and a damn lot more powerful. Norse gods weren't the only supernatural beings in New Mexico when Thor was there.

“I don’t understand why everyone is so obsessed with sex!” Loki burst out. "There are far more interesting things."

Mutants have been extinct since the Eugenics War. But then, Jim's the exception to everything.

Sometimes Darcy thinks life would be much easier if her grandfather weren't a homicidal terrorist with metal-bending powers.

“Your first mistake,” John says smoothly, “was calling yourself Moriarty. It got my attention.” In which Jim is not, in fact, Moriarty.

Looking at the contemplative expression on Lucifer's face, Sam thinks that this has the potential to be either very bad, or completely awesome. Two humans and two archangels in the Cage.

And how things could have gone differently.

Sam smiles, bright and luminous. "An angel's Grace isn't just power, Dean. It's a part of their soul." An AU 'verse that takes place after episode 5.22.

Two hundred years ago the Winchesters stopped the apocalypse. Now, instead of getting into fights and running amok, eighteen year old Jim Kirk goes to live with his Auntie Sam and learns the family business. Four years later, an angel shows up.