Loki is Thor's sister, not his brother. The events of Thor go somewhat differently.

Clint is an omega who isn't interested in mating. Ever. That doesn't mean he wouldn't like a romantic partner, though. Unfortunately, he's never found anyone who was okay with the whole lack of interest thing... but there might be hope yet.

Tony used to think that the 1940s were repressed. Steve's repertoire of racy songs makes him reconsider.

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

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.

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?”

What it says on the tin. (Including Follow-ups to: Maybe one of these days you can let the light in, and One Of Those Things, and Mrs and Mr Pond..)

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

“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.'

In which Darcy Lewis is actually Hel Lokisdottir, Queen of Helheim, and Phil Coulson is the badass secret agent we all know and love.

One rainy afternoon Tony gets home to find a wet-haired child in an over-sized bathrobe sitting on the penthouse couch, watching cartoons. “Um, what,” says Tony. “Oh, hey,” Harley says, noticing him. “JARVIS showed me where to go. He told me to leave my clothes in the bathroom so they could dry, and said I could borrow one of your bathrobes. You have a really big TV, you know that?”

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.

When Loki attempts to mind-control Tony Stark in the middle of the Chitauri invasion, he unlocks powerful memories and abilities, and Tony realises that he's something greater and more powerful than he ever knew. And so is Steve Rogers, but that's a slightly different problem.

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

Loki falls from the Bifrost, and lands in Lilo's garden. Chaos ensues.