Results of qualitative biographical research on Christian fundamentalist converts and de-converts, and on occultist adolescents are presented and documented using case studies. Research focused on life themes and on biographical processes and transformations. Contrastive comparison of the cases resulted in typologies of Christian fundamentalist biographies and of “ways of dis-enchantment”. These indicate that obligation to a tradition is no longer the model for religious socialization. Its competitors are biographical trajectories which can have the following characteristics: heresy is taken for granted, religious search is like an open life-style preference (accumulative heretic); ritual coping with life themes is predominant; and religious search follows the motive of sensation-seeking. A typology of religious styles is applied as an interpretive framework for (a) explaining the formation of fundamentalist orientations and (b) understanding development and transformation in religious biographies.