'The Four Guns is a thought-provoking blend of history, mystery, and speculative analysis that challenges readers to think critically about the past and its implications for the present and future. It's compelling for anyone interested in presidential history, American politics, or historical what-ifs.' -- Larinda Agee, Netgalley

'Very well-researched and written. Unlike some authors, who come to conclusions that leave the truth still ambiguous, John Koerner uses very good logic for evidence that may not be concrete. His analysis of what could have happened if each president had survived their assassinations is also very intriguing and logical. And I am not one to go on hypothetical roads! I especially enjoyed the last chapters on the JFK assassination and finally learned new revelations that I had not read before. I will definitely recommend this book even to those who do not like history. 5 out of 5 stars.' -- Janet Watkins, Netgalley

'I love thinking about alternate realities, and this book was perfectly done. It felt like realistic realities, and the presidents' lives had a unique effect. I thought John Koerner wrote this perfectly and was glad I got to read it. I really enjoyed everything about this book.' -- Kathryn McLeer, Netgalley