I think I’ve mentioned in the past that the editing quality of W. E. B. Griffin’s books (and, especially, those written with/by his son, William E. Butterworth) has seriously declined.
I remember one where one of his protagonists, Charlie Castillo (who is a proud Texican) compares a certain situation to the time that Daniel Boone fought at the Alamo. Umm, no. That would be Davy Crockett; Daniel Boone didn’t make it to the Alamo, he was too busy settling Missouri.
The reason it was so jarring is because the protagonist is so Texan. There’s no way someone so Texan would have made that mistake.
Another thing that takes me out of a book is when the cover art doesn’t match the description of the protagonist in the book. The covers for Alistair MacLean’s paperback books back in the 1970s were famous for showing either the hero or the damsel in distress with lovely golden hair, only to find out in the second chapter that he or she had dark hair.
However, the one that really took me out of the story was a book about a submarine. Fortunately, I cannot recall the name of the book; I thought it had “Poseidon” or “Trident” in the name, but the ones that are showing up in my searches are not one which I describe.
On the cover of this POS was a submarine with smoke coming out of its conning tower, limping its way back to base. The number on the conning tower was clearly visible. Let’s just say that it was #456.
In the book, a humongous deal is made out of the protagonist seeing the submarine while it was way out to sea, coming back in, with smoke pouring from its conning tower. He knows its the ship about which he is concerned, because he can clearly make out the number on the conning tower: #579.
This was not the only mistake in this book. There was one section that, instead of riveting narration for a crucial plot point that takes place over a few pages, instead we get treated to about 10 paragraphs of telling, not showing.
Before I moved last year, I kept the book in my library as inspiration. Surely, I thought (yeah, I know, don’t call me “Shirley”), if this jackwad can get a book deal, then there is hope for me!