Certainly, [John Frémont] presents an awkward, and anticlimactic, subject for a biographer—a failure as a Civil War commander, after contesting Lincoln’s 1864 re-election, the balance of his life was a fortune-draining diminuendo of failed business ventures that left him and Jessie destitute. Rather than vilifying or lionizing John, Inskeep smartly situates him in his context. And here he yields his true significance: as a cipher for the forces at large in U.S. society.