Few issues have polarized the field of psychotherapy research and practice as 'evidence-based practice.' Evidence-based practice is both an approach for evaluating 'what works' in psychotherapy, as well as an epistemological movement rife with controversy. In this course, we examine the fundamental issues and debates associated with the emergence of evidence-based practice in mental health care. Students explore the benefits and constraints of evidence-based approaches in psychotherapy, including critical questions such as: Which treatments are evidence-based? What qualifies as evidence? Who benefits and who is neglected within evidence based research and practice? Students gain familiarity with evidence-based approaches and confidence navigating this complex terrain in their own clinical work.