How to Catch a Strange Thing

There's a subreddit that it was about, do you know where this comes from? And it shows clippings from photos of like a weird shirt that someone's wearing. The police have got some weird book and they'll be like, does anyone know where this book came from? That's so fucking creepy. Well, no, no, it's the police asking for help where they don't know. It's kind of like crowdsourcing help, which I think is the way to do it,. Like all these amateur sleuths. Reddit has the answer.