"Killing the Killers: The Secret War Against Terrorists" is a Hardcover book from the Bill O'Reilly's Killing Series, authored by Bill O'Reilly and Martin Dugard. It was published by St. Martin's Press in 2022 and contains 288 pages. The book delves into the history and political science aspects of terrorism, the Afghan War, the Iraq War, and United States in the 21st century, with illustrations included.