Peter Duffy is a writer based in New York City. He is the author of four books — The Bielski Brothers (HarperCollins, 2003), The Killing of Major Denis Mahon (HarperCollins, 2007), Double Agent (Scribner, 2014), and The Agitator (Public Affairs, 2019). His journalism has been published in The New York Times, New York magazine, The Wall Street Journal, Slate, and many other publications.


Peter Duffy Author Bielski Brothers

The Bielski Brothers

The True Story of Three Men Who Defied the Nazis, Built a Village in the Forest, and Saved 1,200 Jews.

In 1941, three brothers witnessed their parents and two other siblings being led away to their eventual murders. It was a grim scene that would,of course, be repeated endlessly throughout the war. Instead of running or giving in to despair… Read More >

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Peter Duffy Author Double Agent

Double Agent

He was the first hero of World War II and yet the American public has never seen his face. In 1940, with Nazi Germany on the march, William G. Sebold, a naturalized American of German birth, risked his life to become the first double agent in the history of the FBI. Read More >

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Peter Duffy Author Killing Major Denis Mahon

The Killing of Major Denis Mahon

At the height of the Irish Famine, now considered the greatest social disaster to strike nineteenth-century Europe, Anglo-Irish landlord Major Denis Mahon was assassinated as he drove his carriage through his property… Read More >

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