I'd like to suggest a book to you, entitled Newton and the Counterfeiter, by Thomas Levenson (Houghton Mifflin Harcourt). Levenson is a professor in Writing and Humanistic Studies at MIT.
We are all familiar with Isaac Newton's outstanding contributions to science and mathematics, but how many know about his career after 1695? In that year, tired of university life at Cambridge, he moved to London to become Warden of the Royal Mint.
There, he ran into another very bright person, in the form of William Chaloner, an accomplished counterfeiter, who was rising through the ranks of the underworld. As he had in other fields, Newton invented methods of investigation and proof, but these were designed to catch criminals.
Mr. Levenson's writing style is engaging, and you find yourself turning pages quickly. The book reads more like a novel than non-fiction, and the factual basis for the story makes it even more intriguing.