Somewhere there is a door. On the other side is a different universe, and all that's in it is air that's vented in through the imperfect door. The Foundation put in a proper airlock on this side, looked around a bit to ascertain there's really nothing that didn't fall in from Earth, and that's it. It's boring.
Someone made a whole batch of manufactured things - wallet chains, gel bracelets. When worn, they displace the wearer in time by a fraction of a second - if you're using a computer with an Internet connection, they adjust the displacement to cancel out the connection latency, so you can enjoy online games properly! What a gift to some number of youths of the world!
Unfortunately, when removed, there's a backlash that delays the former wearer in time for a while, more severe the longer it was worn - it doesn't happen if you just wear one for a few hours, but who behaves responsibly like that? So after some people died in car crashes and similar accidents too frequent to be normal and caused by an apparent extreme lack of attention, the Foundation found these. The cleanup was easy, and the pile of these things is secured in a locker now - it's just unlikely they were ALL found, and the Foundation has no idea who made them.
Note: From the perspective of the article, this origin story wouldn't be known. It'd be a retrieval log of finding the common trend of each victim possessing a copy of the anomalous item, then finding them in the possession of a non-insignificant chunk of the population of the town they were discovered in.
This guy has, in his nasty, brutish and short life, died of an unnatural cause. And he went, for some reason, to what is essentially a cliche fire and brimstone hell. There, he spent centuries being tortured and otherwise miserable - but it didn't kill him. It couldn't. It made him stronger. And so, eventually, in hundreds of years more of subjective time, he broke out, demons in hot pursuit. He didn't get far the first time - the demons caught up and killed him, and he went back to hell.
It didn't take him nearly as long to break out again. Unfortunately, his exit point was much above the surface of Earth, and the landing killed him. But he was undeterred.
He's escaped his personal hell at least a dozen times, and been detained by the Foundation three times - after spending a few months in hiding the first time around, too. The first two times, he's breached containment. This is the third time.
Can the Foundation hold someone that hell couldn't hold? Honestly, probably. They don't care to sedate him in hell. And sedate him they must, because if he breaks restraints, then breaks his own neck, he's out.
Note: From the perspective of the article, there would be no mention of a hell. There would be the appearances of horrifying anomalous beings, the eventual discovery of the man that appears alongside with them, the eventual detainment of the man.
Somewhere there is a hatch. Next to the hatch there is a telescope on a stand. When you look through the telescope, you see a planet, and can move your viewpoint like it's Google Earth - and the planet appears to be like an Earth, but barely populated - barely a few villages exist.
Whoever and whatever enters the hatch apparently ends up on the planet, as can be seen through the telescope. But there's no apparent way back, no way to remotely control a drone, no way to send information back other than by looking through the telescope.
As far as anyone can tell, the planet over there is… normal. Time passes at the same rate as it does on Earth. There's no danger other than from natural disasters and wildlife. But is it real if it can be barely observed? Without the telescope, anyone entering the hatch would be essentially gone from this world.
Or maybe the people already there - apparently ones that got in before the anomaly was contained - will be humanity's sole survivors when this world ends for one reason or other.
It's a big, heavy book. Every so often, with no apparent regularity, some text appears in it - outlining an event that isn't known to have happened. The text appears handwritten - sometimes it matches the hand of researchers present on site, sometimes it doesn't. The event descriptions are infuriatingly plausible - the Foundation could cover up incidents found in the book. The Foundation could have covered up incidents found in the book - and, natch, the book turns out to be unaffected by anomalies that would wipe out written-down information.
With considerable difficulty, it's found that two of the descriptions are of events that can be proven not to have happened. They contradict reports the Foundation had stored somewhere. But most of them still can't be confirmed to be true or false.
What if a canny researcher has used the book to leave a message that would last through a disaster that'd cover up all other evidence of it ever happening? Maybe some of the events described actually have happened. Maybe they're all useless chaff.
If there's anyone that could ever know, they aren't telling.
Per 
