T his volume brings together theorists working on delusion and self-decep-tion with an eye towards identifying and fostering connections-at both empirical and conceptual levels-between these domains. As the contributions to this volume testify, there are multiple points of contact between delusion and self-deception. This introduction charts the conceptual space in which these points of contact can be located and introduces the reader to some of the general issues that frame the discussions in subsequent chapters.