This article examines the consensus points, evidence base and blind spots of radicalization discourse: namely, the approved ways of talking about radicalization/deradicalization that claim a special scientific or scholarly authority and that have become entrenched as a kind of socially sanctioned common sense embedded in academia, the media and government bureaucracy. Drawing on an analysis of the current 50 most cited journal articles on radicalization and deradicalization, it finds that much of what counts as scholarly knowledge of radicalization and deradicalization lacks a proper empirical foundation and utility for policy makers. It also laments what can be described as “the missing agent” problem in radicalization research, where the dominant focus on putative “risk factors” or “pushes and pulls” of radicalization serves, in effect, to disappear the human agent at the heart of the radicalization process. The article concludes by calling for an empirically-driven approach to radicalization that foregrounds the subjective experiences that animate the process by which people become terrorists or the active supporters of terrorist methods.