Existentialism was one of the most important influences on 20th century thought, especially in the period between the 1920s and early 1960s. Best known through its atheistic representatives such as Sartre, it also numbered many significant religious thinkers. Anxious Angels is a critical introduction to these religious existentialists, who are treated as a coherent group in their own right and merely derivative of secular existentialism. The book argues that they constitute a distinctive religious voice that merits attention in an era of postmodernity.