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Mortal Error: The Shot That Killed JFK Paperback – September 24, 2013

4.7 out of 5 stars 1,056 ratings

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In 1967, a Baltimore man named Howard Donahue began investigating the assassination of President John F. Kennedy. Like countless Americans, Donahue was fascinated by the events in Dallas. But what separated him from other amateur sleuths, and even the Warren Commission experts, was a lifetime's experience with guns and ballistics. In Mortal Error, Bonar Menninger chronicles Donahue's twenty-five-year investigation of President Kennedy's death and the stunning revelation it led him to. In crisp, rapid-fire prose, Menninger relates one of the greatest true-life detective stories ever told. More important, he offers solutions to questions that have haunted America for 50 years.
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Editorial Reviews

About the Author

Bonar Menninger is the author of And Hell Followed With It: Life and Death in a Kansas Tornado, published by Emerald Book Co. in 2010. Menninger earned a degree in journalism from the University of Kansas. He has worked for a range of publications, both on staff and as a freelancer, since 1984. He's done investigative reporting for the Kansas City Business Journal and Washington Business Journal and also has covered general business and healthcare for numerous online and print publications.

Product details

  • Publisher ‏ : ‎ CreateSpace Independent Publishing Platform; 2nd edition (September 24, 2013)
  • Language ‏ : ‎ English
  • Paperback ‏ : ‎ 396 pages
  • ISBN-10 ‏ : ‎ 149095242X
  • ISBN-13 ‏ : ‎ 978-1490952420
  • Item Weight ‏ : ‎ 1.4 pounds
  • Dimensions ‏ : ‎ 6 x 0.9 x 9 inches
  • Customer Reviews:
    4.7 out of 5 stars 1,056 ratings

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4.7 out of 5 stars
1,056 global ratings

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Customers say

Customers find the book well-researched and compelling, presenting a theory that makes the most sense among conspiracy theories. They appreciate its readability, with one customer noting it reads like a thriller.

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200 customers mention "Pacing"192 positive8 negative

Customers appreciate the book's pacing, finding it well-researched with a compellingly believable explanation that makes the most sense among conspiracy theories presented.

"...Anyway, I think everyone should read this book because it opens up a lot of questions not just about Kennedy's killing (though it does do that), but..." Read more

"...The author has detailed in ballistic terms, the unyielding laws of physics that contributed to the assassination while unearthing the government's..." Read more

"Excellent book on the true story of the shooting of JFK and who actually did the shooting." Read more

"Spoiler, Secret Service pulled the final trigger. Ballistic expert is very believable. Not a conspiracy. Great book." Read more

165 customers mention "Readability"158 positive7 negative

Customers find the book well written, concise, and worth reading.

"...Menninger presents it in a clear and organized fashion, starting from the beginning where Donahue enters the picture and what led him down this road...." Read more

"...Menninger skillfully puts it all together. Well worth the time." Read more

"...No conjecture here. The author has detailed in ballistic terms, the unyielding laws of physics that contributed to the assassination while..." Read more

"This is an excellent book about ballistics expert Howard Donahue and the extensive research he conducted in a quest to determine who fired the..." Read more

Top reviews from the United States

  • Reviewed in the United States on December 4, 2013
    I bought MORTAL ERROR: THE SHOT THAT KILLED JFK by Bonar Menninger after seeing the documentary called "JFK: The Smoking Gun," which is based on this book.

    Menninger based his book on the studies, findings and interviews he conducted with a man named Howard Donahue who was a firearms/ballistic expert/gun engineer and was the only one out of 11 rifle shooters that CBS hired to test and fire the Carcano rifle -- the same model that Lee Harvey Oswald used to assassinate President John F. Kennedy -- and hit the moving target with all three shots within the required time. This test was conducted in 1967, I believe, and done at CBS News's cost to compare with the Warren Commission's Report on Kennedy's assassination.

    This is how Donahue comes into the picture. After conducting the CBS rifle test back then, Donahue was approached by a small newspaper to write a story about his experience with the rifle and the Warren Commission's findings and it was during this time he began to find inconsistencies and factual errors throughout the report when compared to the evidence. This led him down a road that was an extremely tangled web of conspiracies, inaccuracies, cover-ups, etc., that took decades to unravel.

    What Donahue uncovers is really quite shocking; he asserts that although Oswald did shoot at Kennedy, two of the shots hit, and one missed, the third -- and what many would say was the fatal shot -- came from an accidental shooting from a secret service agent who was riding in the follow up car to the President's. Even though most believe that the third and final shot was what killed President Kennedy, Donahue believed, based on the X-Rays and doctors' testimonials, that the second shot that hit both Kennedy and Texas Governor Connally might have actually been the mortal wound that killed him even if the third shot to the back of the head never happened. And he believes that the outside or third shot was accidental, coming from an AR-15 rifle that a secret service agent reached for after the first shots were fired and the gun accidentally discharged when he fell backward as the cars sped up. He arrives at this conclusion not from a preconceived ideal, but following the factual evidence such as the Zapruder film, various photos, X-rays, autopsy reports, and witness testimony (including those that were not used in the Warren Commissions hearings).

    I'm not going into too many details here but basically that's Donahue's theory, which he gathered from evidence and conducting his own experiments based on that evidence with ballistics/trajectories, etc., and that's what author Menninger has laid out in this fascinating book.

    Not only do you get the actual photos and diagrams that were taken from the time, but you also get the witness testimonies in the appendix, the excerpts from the actual Warren Commission's Report, Donahue's own drawings, etc., etc., and why he believes what he believes. Menninger presents it in a clear and organized fashion, starting from the beginning where Donahue enters the picture and what led him down this road. Donahue also dispels many of the myths surrounding the JFK shooting including the infamous one that Oliver Stone based his movie JFK on (the "magic bullet"), and the real life debacle of Louisiana DA Jim Garrison and his pursuit of Clay Shaw.

    I think this book was originally published in 1992 but this is the first time, thanks to the documentary, that I've heard about Donahue's theory. We just passed the 50th Anniversary of The JFK Assassination and I think they re-released this book in e-form recently, and I'm not sure if anything has been revised, but so far this is the most plausible theory that I've heard yet.

    I don't think anyone has refuted Donahue's theory. If so, I haven't heard anything yet. In fact, until seeing the documentary, I never even heard of this and it never comes up during the specials about the myths and coverups regarding the assassination.

    Menninger paints Donahue as someone with no ax-to-grind and had no vested interest in the outcome of his findings and was only bringing this up time and time again, including to the US House of Representatives Select Committee on Assassinations (HSCA) in 1976, which was formed at that time to directly address the Kennedy and MLK assassination (among others), after finding contradictions and errors in the Warren Commission's Report, compared with the evidence, so that once and for all his theory could be either disproved or allowed to stand, but he was basically ignored or shuffled away.

    Anyway, we'll probably never know what really happened but this argument is one that makes sense. I'm surprised that this isn't one of the more widely known theories out there, but maybe it's just me that hasn't heard of this one before.

    In any event, the book is a great read!

    I did have some issues with the pictures and other incidental material such as diagrams, testimonies etc., on my Kindle Fire HD. There are links to the corresponding evidence in each chapter, so when you click on them, it takes you to the picture, figure, diagram etc., and sometimes when I zoomed in on the picture and pressed the back button, it would take me back to the original photo, and I'd press back again to get back to the chapter, but the book would close and I'd be at the carousel.

    Also, some illustrations were stacked one on top of the other, 90-degrees to the reader, so when you tilt the Kindle to try and see it right side up, the orientation would move, so it would remain at 90-degrees (which can be fixed by disabling the "auto orientation" or "auto rotate" whatever it's called in the settings). These were just small annoyances that I thought I should mention. Other than that the Kindle book is an interesting read, although it does get a little technical at times.

    Anyway, I think everyone should read this book because it opens up a lot of questions not just about Kennedy's killing (though it does do that), but about what is moral in regards to what should and should not be revealed to the public.
    47 people found this helpful
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  • Reviewed in the United States on February 21, 2015
    This book is the only one I've read that actually makes sense in actually explaining what happened to President Kennedy. As a Marine Corps veteran and law enforcement officer I've been around guns in a professional capacity my entire adult life. Forensics usually solves any homicide. Menninger does an outstanding job detailing the forensics of the assassination and couples this with the actions and behaviors of government officials and Kennedy family members, namely Bobby Kennedy. Furthermore, the testimonies of eyewitnesses are highlighted, making a compelling argument of the actual events.

    I finally feel that I know the truth about where the bullet came from that struck JFK in the head. I now laugh that I actually believed the "magic bullet theory" profiled in the movie "JFK," which debuted when I was in high school. "Back and to the left." Give me a break......makes no sense.

    Lee Harvey Oswald indeed was shooting from the book depository building. He got off two shots, the second hitting both JFK and Governor Connelly (the magic bullet). Oswald was most likely aiming to take a third shot when he too saw JFK's head explode and then heard the concussion of the shot, coming from in front of him. Oswald is later seen pleading that he was a patsy. This is most likely the case because he was so confused as to who shot JFK in the head after he had fired two shots.

    The final shot which hit JFK in the head was a terrible, horrific, humiliating accidental discharge by a Secret Service agent armed with an AR-15 from the lumbering Cadillac follow car behind JFK's Lincoln convertible. In my military and law enforcement experience I have seen several negligently discharged firearms.....it happens. In the anxiety and confusion of the moment, it is absolutely feasible Hickey negligently pulled the trigger, striking JFK in the head. I concur completely with the forensics presented in this book which prove that head shot came from an assault rifle, and not the clunky bolt-action rifle Oswald was using.

    As far as all the other conspiracy theories. e.g., the Cubans, the mafia, the elusive second gunman on the grassy knoll, etc., none make sense compared to the physical evidence presented herein. None of those theories have any amount of proof. None. They are just fantasies set in motion to sell books to capitalize on the emotions of the most infamous crime of the twentieth century.

    The Warren Commission's testimonies are dissected by Menninger, gleaning the smallest details which prove culpability on the part of Secret Service Agent George Hickey, Jr.

    The forensics and the eyewitnesses tell the story of what happened that day in Dallas. Menninger skillfully puts it all together. Well worth the time.
    16 people found this helpful
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  • Reviewed in the United States on December 4, 2023
    the author, collectively, has made a compelling case for the scenario that killed JFK. No conjecture here. The author has detailed in ballistic terms, the unyielding laws of physics that contributed to the assassination while unearthing the government's alleged motives for the burying of the truth. I think that this book has
    managed to destroy all previous narratives of the events of the assassination.
    3 people found this helpful
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  • Reviewed in the United States on April 1, 2025
    Excellent book on the true story of the shooting of JFK and who actually did the shooting.

Top reviews from other countries

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  • glesgaman
    5.0 out of 5 stars Very credible theory by a ballistics expert
    Reviewed in the United Kingdom on May 13, 2024
    The author gives a detailed account of Howard Donahue's theory that the final shot that hit Kennedy was accidentally fired by a secret service agent in the follow-up car behind the president's car. Donahue's evidence is told in a clear way without being too technical so the layman can follow his logic. The only theory I have found convincing among the host of conspiracy stories I have heard. Well told in a non-sensational fashion. It also debunks several of the other theories including several aspects of the Warren report and other official investigations. Well worth a read for anyone with an interest in the assassination of JFK.
  • kym wright
    5.0 out of 5 stars Happy reader
    Reviewed in Australia on December 27, 2022
    Love my books
  • U.B.
    5.0 out of 5 stars Wenn man wirklich wissen will, wer JFK erschoss. ...
    Reviewed in Germany on July 1, 2014
    Aufgrund einer Dokumentation, welche im Fernsehen gezeigt wurde, habe ich mir dieses Buch bestellt. Man sollte wissen, dass dieses Buch in englisch geschrieben ist. Meines Erachtens gibt es hierzu noch keine deutsche Übersetzung. Aber wenn man gute Englischkenntnisse hat, versteht man es auch so. Das Buch gibt die Theorien des Ballistikers Howard Donahue wieder, der fast sein ganzes Leben damit verbracht hat, dieses Attentat aus Sicht der Ballistik aufzuklären. Es ist schlüssig geschrieben und erklärt bzw. belegt die Theorien Donahues fachkundig. Es zeigt die Missverständnisse und Fehlinterpretationen der Warren-Kommission auf. Alles im Allem sehr interessant. Man hat das Gefühl, der Wahrheit ziemlich nahe zu sein. Das Buch zeigt die Verschleierungstaktiken auf, zitiert aus gerichtlichen Zeugenaussagen, etc.. Man glaubt wirklich zu wissen, wer der eigentliche "Attentäter" war. Soviel sei gesagt: Es war nicht die "magische Kugel", die Lee Harvey Oswald abgefeuert hat. ...
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  • Brian
    5.0 out of 5 stars Must Read!
    Reviewed in Canada on June 30, 2019
    This book was very well written. It puts all the theories aside and looks at the ballistics itself which cannot be denied. It looks at trajectory of the bullets. Everyone including myself take for granted that the roadway was not 100% level, there was a slope and this book shows that the shot that killed Kennedy could not have come from the depository. This book also shows that there was a cover up, however we will never know the truth. I have read many credible books on this topic and there was so much going on in the USA during this time. If this truly was an accident by the secret service agent, all the goings on in the country made it perfect to cover it up. Remember this was a time the RICO statute was being developed, CUBA was in turmoil and the CIA, FBI and NSA were fighting amongst each other to be top agency. That's why documents were not being shared and things went through the cracks.

    Did Oswald play a role? 100% he did. Did Oswald pull the trigger? Yes, he killed officer Tippet, as for a shot on Kennedy I just don't know.

    The last I will say is if you are into the Kennedy assassination this book is one you should have in your collection.
  • MrRoboto
    5.0 out of 5 stars A must read for those who want to know more about the Kennedy case
    Reviewed in the United Kingdom on April 28, 2024
    There are loads of conspiracy theories (encapsulated in Oliver Stone's "JFK" but here we have another possible explanation which seems to have been exhaustively and comprehensively researched. It's all there in the book's description. Buy it for a fascinating and compelling read on the events in Dallas 1963.