Zuzana Marie Kostićová is a scholar of religious studies and a Mayanist at the Department of Religious Studies, Protestant Theological Faculty, Charles University. She is a leading Czech expert on Maya religion and contemporary alternative spirituality, on which she recently published the comprehensive book New age, „ezo“, alternativní spiritualita (New Age, “Esoterica,” Alternative Spirituality) (2026). She explores how alternative spirituality intertwines with Indigenous traditions, and also studies its doctrinal foundations and its connections to new media. She is also active in science popularization, and writes novels under the pseudonym Anna Winterová.