Unknown History is on hiatus between seasons, but in the meantime, we hope you enjoy this special excerpt from Agent Sniper: The Cold War Superagent and the Ruthless Head of the CIA by Tim Tate, brought to us by our colleagues at Macmillan Audio. You can get your copy of Agent Sniper from Amazon, Audible, Barnes & Noble, Bookshop, or wherever books or audiobooks are sold.