Alex Mar is an American journalist, writer, and documentary filmmaker whose work frequently investigates religion, belief systems, and various subcultures. Based in the Hudson Valley and New York City, her creative output spans both film and literature, often delving into communities and practices outside the mainstream. Mar's projects are characterized by their deep engagement with subjects, sometimes involving years of research and personal involvement.

Her documentary filmmaking and writing explore a range of spiritual and cultural phenomena. She has documented individuals within fringe religious groups and examined contemporary occult practices. Mar's background, including her upbringing as the daughter of Cuban and Greek immigrants, informs her perspective on mysticism and ritual. Her essays have been published in prominent outlets, covering diverse topics from religious orders to forensic science and robotics.

Alex Mar's book "Witches of America" offers a dual perspective as both a personal memoir and an in-depth examination of contemporary occult practices within the United States. The narrative traces the evolution of modern occultism, referencing figures like Aleister Crowley and organizations such as the Ordo Templi Orientis, leading up to contemporary rituals like the Gnostic Masses. A significant element of the book involves Mar's personal connection with Morpheus Ravenna, a Feri witch she encountered during the production of her film "American Mystic." Mar also details her own journey through the spiritual training required for initiation into the Feri tradition, exploring her personal engagement with mysticism and ritual, influenced by her diverse cultural heritage.

Mar's documentary "American Mystic," which premiered at the Tribeca Film Festival, is a five-year project that offers an intimate look at individuals within unconventional religious communities. The film focuses on three distinct figures: Morpheus, a Pagan priestess establishing a spiritual sanctuary in rural California; Kublai, a Spiritualist medium operating on a farm in upstate New York; and Chuck, a Lakota Sioux man dedicated to preserving his ancestral way of life. This work exemplifies Mar's approach to capturing the essence of diverse belief systems and spiritual journeys through long-form documentary.

Beyond her books and documentaries, Alex Mar's journalism has explored a wide array of subjects for publications such as The New York Times Book Review, The Believer, Wired, and the Oxford American. Her essays delve into varied communities and phenomena, including contemporary Catholic nuns in Houston, the Church of Satan, the "body farm" at Texas State University, and the development of advanced androids in Japan. This breadth of reporting, which earned her a National Magazine Award nomination for Feature Writing in 2018, highlights her investigative curiosity across religious, scientific, and cultural frontiers.