Co-authored with Sean Trainor, the book examines power, ethical failure and the responsibilities of leadership.
The New York Globe has named 12 Crimes of Leadership: The Dark Mirror Between the Boardroom and the Underworld, co-authored by Stephen Gillen and Sean Trainor, an official New York Globe bestselling book.
The recognition establishes Gillen and Trainor as New York Globe bestselling authors and brings attention to a book that approaches leadership through the consequences of misused power.

Drawing on contrasting backgrounds, the authors examine how destructive behavior can take hold within organizations. Gillen contributes lessons from his past in the criminal underworld, while Trainor brings experience in leadership coaching and corporate communications. Together, they explore the relationship between authority, judgment and responsibility.
The book pairs 12 leadership failures with practical responses, including humility, adaptability, courage and accountability. Its four sections address authentic, situational, brave and accountable leadership, using corporate cases to explore how organizational cultures can deteriorate when damaging behavior goes unchallenged.
The emphasis extends beyond identifying what goes wrong. The authors encourage leaders to recognize warning signs, examine their own conduct and address problems before they become embedded in an organization’s culture.
The New York Globe’s bestseller initiative considers critical reception and cultural significance alongside commercial performance, taking a broader approach than sales alone.
For Gillen and Trainor, the designation marks a publishing milestone for a work centered on a demanding question: how should people entrusted with power choose to exercise it?

Learn more about the book at 12crimesofleadership.com.