Despite the important place it occupies in both Freudian and Lacanian nosology, obsessional neurosis has received far less attention than its erstwhile companion hysteria. This volume of essays aims to elaborate and deepen research into the question of obsession, going beyond the usual cliches which reduce obsession to the question 'Am I alive or dead?', and providing rigorous discussion of some of the following themes: the creation of the category of obsessional neurosis and of OCD, act and action in obsession, debt and guilt, aggression and solicitude, distinguishing the symptomology of obsessional neurosis from OCD phenomena, and clinical questions of work with obsessional subjects.