What if witches were real … and they were the ones behind the Salem witch trials all along? Well, then you’d have the plot of WGN’s Salem, a show about witches that is very scary. Today, we’re pleased to present this exclusive trailer for the show’s third season, which will premiere, appropriately enough, on Halloween week. Is that scary enough for you? And we didn’t even have to sacrifice an unbaptized babe to Black Phillip to get it.