Many people believe in angels and evil spirits, and popular culture abounds in stories of encounters with such entities. Yet the plausibility of their existence is a question largely ignored by the academic establishment. In this book Phillip Wiebe presents a sophisticated defence of the traditional Christian belief in the reality of transcendent beings. Central to the argument is Wiebe's advocation of the 'naturalising' of supernaturalism. He gives priority to the investigation of belief as it arises out of human experience. His thesis is grounded in the careful analysis of a wide range of recorded 'encounters' dating back to biblical times, and constructs a case for religious belief on philosophical and epistemological grounds.