This Friday the 13th, watch out for deep sea serpents and deathwatch beetles, and even something as innocent as a rainbow. The origins of Friday the 13th are murky, with possible connections to Judas being the 13th guest at the Last Supper, or the Knights Templar being condemned on a Friday the 13th. Just like the holiday, many superstitions have mysterious origins. We often hang on to old ideas without knowing how they came about. Explore these five stories of superstition, from human sacrifice to the rise of sleep paralysis…
