This book explores the problem of time and immanence for phenomenology in the work of Edmund Husserl, Martin Heidegger, Maurice Merleau-Ponty, and Jacques Derrida. Detailed readings of immanence in light of the more familiar problems of time-consciousness and temporality provide the framework for evaluating both Husserls efforts to break free of modern philosophys notions of immanence, and the influence Heideggers criticism of Husserl exercised over Merleau-Pontys and Derridas alternatives to Husserls phenomenology. Ultimately exploring various notions of intentionality, these in-depth analyses of immanence and temporality suggest a new perspective on themes central to phenomenologys development as a movement and raise for debate the question of where phenomenology begins and ends.