In this leadership guide, Frances X. Frei and Anne Morriss present a framework for diagnosing and resolving complex organizational problems with speed and trust. Drawing on research in leadership, trust-building, and organizational behavior, the authors argue that effective problem-solving requires both technical rigor and relational credibility. Through case studies and applied strategies, the book outlines how leaders can identify root causes, mobilize teams, and implement solutions while maintaining transparency and accountability. The work emphasizes that trust is not a byproduct of leadership but a central mechanism for driving change and achieving sustainable results