This innovative book helps the reader reflect on how to respond to—and, whenever possible, prevent—ethical challenges in program evaluation. The text features six case-study scenarios that end at a point where the evaluator faces a significant decision about how to proceed. For each case, two distinguished evaluators offer insights on the best course of action to choose and why, showing how even experts can differ in their interpretation of "doing the right thing." Also featured are "What If?" boxes that modify the details of the scenarios and give the reader an opportunity to decide if these changes alter the ethical implications of the case. Six additional case scenarios are presented with guiding questions prepared by the author, but without commentaries, to help readers gain experience in developing ethical analyses on their own. Organized to follow the progress of an evaluation, from the entry/contracting phase through the utilization of results, this class-tested book is entertaining and thought provoking. It will enhance any student or practitioner's understanding and practice of evaluation.