The Spy Who Billed Me | Atlas Obscura
(Photo: Photick/shutterstock.com) In 1961, when a KGB counterintelligence officer showed up at a CIA station in Helsinki, Jeanne Vertefeuille held the keys to the office safe. “Responsibility for office funds was part of my normal administrative duties,” the former CIA officer writes in Circle of Treason, the book she co-authored in 2013, “and therefore I could…