Blame this.
Arg fisk drikke
Yes, even the crack agents of Sweden’s C-byrån intelligence agency hate the taste of the arg fisk drikke (‘angry fish shake’). …What, you’ve never heard of C-byrån? Yes, well, that would be the idea, wouldn’t it? The Swedes did an excellent job of sanitizing what little public history there is of the group, which is impressive. Normally you’d think that a World War II spy agency that was top-heavy with art historians and other academics, and who had Abwehr head Wilhem Canaris as an intelligence source, would trip the radar of certain researchers in the modern era. Then again, there were a lot of WWII and Cold War archives that got thoroughly sanitized before the Internet showed up and made copying things an exercise in triviality.
Good luck finding the true history of the group, in other words. Finding them involved in current affairs, on the other hand… well, it’s not as difficult. Look for reports that combine inexplicable crime scenes in ports throughout Scandinavia; unsavory shipping firms based out of the South Seas, British Columbia, and Massachusetts; the worst sort of smuggling and human trafficking rings; a remarkable number of victims with neither identification nor blood in their veins — and reports of tall, blond men and women who can throw baseballs through walls and shrug off automatic weapons fire. But do it quick; the European Union’s NIS Directive is fast at jumping on local stories like this before they become international ones.
Still, thanks to one leaked CCTV video (complete with sound, so maybe that should be ‘leaked’) there are three things that are known. One, the arg fisk drikke has an interesting beneficial effect on human strength, durability, and presumably ability to heal. Second, the people from the apparently-not-disbanded C-byrån who drink it find the stuff disgusting, and not just on a physical level. Third, there seems to be some sort of relationship between the origin of the arg fisk drikke, and all those victims who ended up oddly bloodless.
But you probably guessed that one already.