A survey of the development of Christian theology in the twentieth century following the collapse of theological liberalism after the First World War. Focuses on the emergence of “Neo-orthodox” theology, especially that of Barth, Tillich, Bonhoeffer, and the Niebuhrs, the dissolution of neo-orthodoxy at mid-century, and the emergence of new paradigms represented by Karl Rahner, process, feminist, and liberation theologies, Moltmann, Tracy, Lindbeck, and the conversation with postmodernism.