The Executioner is a 1970 British Cold War neo noir spy thriller film directed by Sam Wanamaker in Panavision and starring George Peppard as secret agent John Shay who suspects his colleague Adam Booth, played by Keith Michell, is a double agent. In the film, Peppard's character tries to prove the double role of his colleague to his spy-masters and when he fails to do so he kills him. It was produced by Charles H. Schneer for Columbia Pictures and filmed in Panavision and Eastmancolor.