Since it was founded in 2013, The Satanic Temple has spread across the United States and throughout the world. Unlike other forms of Satanism, The Satanic Temple is highly politically active. It has invoked religious freedom to campaign for easier access to abortion, exemption from laws that allow administering corporal punishment to students, and implementing Satanic after-school clubs in elementary schools. While this group remains highly controversial, it is poorly understood. This book provides a detailed history of The Satanic Temple’s history, beliefs, and culture as well as the numerous political and legal battles this group has undertaken. The author suggests that the lasting impact of The Satanic Temple is the way their campaigns have affected national conversations about such topics as the definition of religion, religious freedom, and religious tolerance.