George C. Scott, Kirk Douglas, Dana Wynter, Clive Brook, Gladys Cooper, Herbert Marshall, Jacques Roux, John Merivale, Marcel Dalio, Bernard Archard, Tony Huston, Ronald Long, Tony Curtis, Burt Lancaster, Robert Mitchum
Adrian Messenger, a famous writer, asks his friend Anthony Gethryn, a former British agent, to help him investigate the whereabouts of the people who appear on a list, without asking him the reason why he should do so.