Killing Reagan: The Violent Assault That Changed a Presidency is a book written by Bill O'Reilly and Martin Dugard about the attempted assassination of U.S. President Ronald Reagan in 1981. It is the fifth in the "Killing" series, following "Killing Lincoln", "Killing Kennedy", "Killing Jesus", and "Killing Patton". The book was released on September 22, 2015, and topped "The New York Times" Best Sellers List.