For many therapists it has replaced previous action terms such as acting in and acting out. Something new has been captured by this concept: a recognition of a process that may involve words but goes beyond words. For some, enactment addresses a continuous undercurrent in the interaction between patient and therapist in the realm of intersubjectivity. Others ask whether this concept adds either clarity or a new perspective to the clinical situation. This volume addresses the questions: Does the current focus on enactments entail a shift in our model of therapeutic change? Are enactments essential? Can they be dangerous, and if so, under what circumstances? Enactment is essential reading for all psychotherapists.