This paper examines Alvin Plantinga's defence of theistic belief in the light of Paul Draper's formulation of the problem of evil. Draper argues (a) that the facts concerning the distribution of pain and pleasure in the world are better explained by a hypothesis which does not include the existence of God than by a hypothesis which does; and (b) that this provides an epistemic challenge to theists. Plantinga counters that a theist could accept (a) yet still rationally maintain a belief in God. His defence of theism depends on the epistemic value of religious experience. I argue, however, that Plantinga's defence of theism is not successful.