***A fresh examination of the life and crimes of the highest-ranking federal official ever tried for treason and espionage*** *American Traitor* examines the career of the notorious Gen. James Wilkinson, whose corruption and espionage exposed the United States to grave dangers during the early years of the republic. Wilkinson is largely forgotten today, which is unfortunate because his sordid story is a cautionary tale about unscrupulous actors who would take advantage of gaps in the law, oversight, and accountability for self-dealing. Wilkinson’s military career began during the Revolutionary War and continued through the War of 1812. As he rose to the rank of commanding general of the US Army, Wilkinson betrayed virtually everyone he worked with to advance his career and finances. He was a spy for Spain, plotted to have western territories split from the United States, and accepted kickbacks from contractors. His negligence and greed also caused the largest peacetime disaster in the history of the US Army. Howard W. Cox picks apart Wilkinson’s misdeeds with the eye of an experienced investigator. *American Traitor* offers the most in-depth analysis of Wilkinson’s court-martial trials and how he evaded efforts to hold him accountable. This astounding history of villainy in the early republic will fascinate anyone with an interest in the period as well as readers of espionage history.