“Dude, we gotta go. It’s not safe here.” A guide had come back to find me in a bar underneath a coach station in Bratislava. I’d started the evening on a Halloween pub crawl, but somewhere along the way I’d stopped doing the crawl part and stayed behind drinking shots of something vaguely like gin with a group of Slovak men. They spoke no English, I spoke no Slovak, and neither side seemed particularly bothered by this arrangement. I was enjoying myself enough that I hadn't e