In 1985 a commercial went out in Japan that quickly elicited panicked calls from the public. Rumors of a curse spread, claiming those who watched would meet a terrible fate. But just how real was this curse?

In the city of Izu in the Shizuoka Prefecture of Japan, sits one of the country’s most popular tourist destinations, Joren Falls. But, according to legend, it’s also home to a shapeshifting creature known as the Jorogumo.

Japan is said to be home to a terrifying vengeful spirit sometimes known as the Teke Teke. But reader beware; according to legend, three days after learning about this vengeful spirit, she’ll come for you.