Across premodern Europe, the night was believed to be alive with spectral processions like the Wild Hunt and Witches’ Sabbath—phantom gatherings of spirits, outcasts, and dreamers that blurred the lines between reality and the supernatural. These "Armies of the Night" preserved ancient pagan rituals and ecstatic visions, often repressed as heresy, and reflected deep fears and hopes about the soul and the mysteries of the unseen world. Historian Jason Lahman’s illustrated talk explores how these nocturnal myths reveal early Europeans’ imaginative responses to night, the afterlife, and the boundaries between worlds.