We investigated the antecedents, occurrences, and consequences of 183 silence events in the first 5 and last 5 sessions of a 73-session case of successful psychodynamic psychotherapy. Silences generally occurred within client speaking turns, such that the client often paused to reflect while speaking. In the last 5 sessions, as compared with the first 5 sessions, the client was more collaborative before and after silences, silences were shorter, the therapist was more connectional during silences (e.g., shared emotion and meaning with client), and the client was more emotional after silences. Antecedent client collaboration, duration of the silence, therapist behavior during silence events, client behavior during silence events, and who broke the silence all related to change in collaboration from before to after the silence events. We concluded that silence was helpful in this case because of client factors (the client naturally paused a lot during discussion, the client was quite reflective and insightful), therapist factors (the therapist was comfortable with and believed in silence), and relationship factors (there was a strong therapeutic relationship).