In this elegant ethnography, Kelly E. Hayes presents the most comprehensive study of Brazil's Valley of the Dawn to date. Skillfully balancing thick description with astute analysis, Hayes situates the movement in the context of Brazilian modernity, gender politics, and the various religions-including Umbanda, Kardecist Spiritism, and Theosophy-that have shaped it. In so doing, Spirits of the Space Age offers an alternative story of occult and metaphysical religion, emphasizing its place in the Catholic Atlantic and the Global South.