I really liked this book. I'm not the biggest fan of historical fiction, but this book felt different than the other I've read. It was dark and had noir / detective elements to it - plus it was informative! When you think about the U.S. Presidents who have been assassinated you rarely read about William McKinley, but the story behind his assassination is fascinating.
My favorite scenes in the book feature Theodore Roosevelt, who was McKinley's VP. The author does a great job of making his larger-than-life persona come through - even though he has a small role in the book. I will say no more... read the book.