>>no political axe to grind<<
Maybe not, but make no mistake, he went into this book like he did with all this cases (as all prosecutors would): as an advocate with a position to prove rather than a search for the truth. Anyone that believes otherwise is fooling themselves.
I haven’t his book, so I can’t give it a fair assessment. But unless he included something original or new in here, assassination researchers aren’t going to that this or him seriously.
I am listening to it now, and I think what is different is that he is applying his particular prosecutorial style to the analysis an narrative.
And it is different from Posner in style.