A historical character, Pinkerton is a Scottish born detective, destined to become the most famous in America and to found the U.S. Secret Service during the Civil War. He is on the cusp of fame in 1859. Pinkerton meets narrator Sir Harry Flashman when Annette Mandeville, the wife of Atropos, leader of the pro-slavery Kuklos organization, tries to shake off Kuklos spies in New York City. They are ambushed by Pinkerton's joint police/federal agent task force, a member of which is Annettte. Pinkerton knows Flashy's true background from his youthful days rioting against British occupation of Scotland, and promises to vouch for him only after he enlists with John Brown to prevent a raid that could set off a civil war. Pinkerton introduces Flashy to Sen. William H. Seward, who seals the deal for Flashy to become Brown's military adviser.