Cryptid By Deane Barker • April 6, 2024 • This is a creature that some people theorize exists, but for which no scientific evidence exists. Think Bigfoot or the Loch Ness Monster. Why I Looked It Up It came up in Once Upon a Tome in reference to a category of humans that were just odd and difficult to figure out. It was a bitterly cold afternoon when I met my first bookshop cryptid, and I remember it well.