A new book suggests Harry Hopkins, a key advisor to President Franklin D. Roosevelt, played a crucial, yet often unacknowledged, role in securing Allied victory in World War II. The book, authored by Geert Mak, posits that Hopkins actively worked to ensure Hitler’s defeat through strategic maneuvering and influence. While the book is generally well-received, the review notes some shortcomings in its overall presentation. It focuses on Hopkins’ behind-the-scenes efforts and his close relationship with Roosevelt during the war years. The author argues Hopkins’ actions were instrumental in shaping the course of the conflict. The review acknowledges the book’s potential value despite its flaws, highlighting the importance of recognizing Hopkins’ contribution to the Allied win. Ultimately, the book aims to illuminate the influence of this pivotal figure in 20th-century history.