Screenplay by TERRY NATION   Directed by JOHN GILLING     Richard Barrett becomes a member of a group of fanatical assassins—and learns that his boss, Tremayne, is an intended victim.     When world leaders are assassinated in a series of daring killings, Tremayne (ANTHONY NICHOLLS), the head of Nemesis, is convinced that the murderers are a group of dedicated fanatics, each of them willing to kill and be killed.   There is every reason to believe that the group are trying to enlist Roger Carson (DAVID BURKE), who is in prison for releasing Top Secret information. They have already tried to help him escape from jail. But they have no idea what he looks like now: after a car crash, plastic surgery has given him completely new features.   This is an opportunity for Richard Barrett (WILLIAM GAUNT) to take the traitor’s place in jail and await the next rescue attempt. The plan works. “Carson” is rescued while being moved to another prison, and Richard is taken to a country home and kept under guard in a cellar by the leaders of the group: Croft (GERALD HARPER), Anderson (JULIAN GLOVER) and Krasner (DAVID MORRELL).   Richard succeeds in escaping from the cellar and in contacting Nemesis. He then faces up to Croft and is accepted as the real Roger Carson. And he learns that the aim of the fanatical group is to take over world power.   Left alone, Richard comes face to face with Roger Carson, who has escaped from jail, but overcomes him in a fight. And when Craig Stirling (STUART DAMON) and Sharron Macready (ALEXANDRA BASTEDO) arrive, the three of them succeed in finding evidence that the next important person to be assassinated is none other than their own boss, Tremayne.   Tremayne is now at an official reception in London and this, the Champions guess, is where Croft and his colleagues have gone. Somehow, the Champions have got to get the London before the unsuspecting Tremayne can meet with the same fate as so many of the others on the Fanatics’ list...     AN PRODUCTION   Series created by Monty Berman and Dennis Spooner   © Copyright Incorporated Television Co. Ltd. MCMLXVII     Stuart Damon   Alexandra Bastedo   William Gaunt   Anthony Nicholls   Gerald Harper     Craig Stirling   Sharron Macready   Richard Barrett   Tremayne   Croft     Donald Pickering   Julian Glover   David Burke   David Morell   Barry Stanton   John Robinson     Colonel Banks   Anderson   Carson   Krasner   Faber   Collings     Associate Producer   Director of photography   Art director   Editor     Johnny Goodman   Frank Watts   Charles Bishop   Peter Pitt     Musical director   Theme composed by   Post-production supervisor   Production manager   Casting   Stunt arranger     Edwin Astley   Tony Hatch   Philip Aizlewood   Malcolm Chistopher   Judith Jourd   Bill Sawyer     Sound editor   Sound recordists   Music editor   Associate art director   Set dresser   Construction manager     Alan Corder   Len Abbott, Dave Bowen   Deveril Goodman   John Graysmark   Brian Rider   Bill Greene     Second unit director   Second unit cameraman   Camera operator   Assistant director   Continuity   Special effects     John Hough   James Allen   John Winbolt   Pat Kelly   Annabel Davis-Goff   Sid Pearson     Scenic artist   Production buyer   Make-up supervisor   Hairdressing   Wardrobe supervisor   Supervising electrician     A.J. Van Montagu   Sid Palmer   Gerry Fletcher   Michael Jones   Laura Nightingale   Ted Hallows       Made on location and at ASSOCIATED BRITISH ELSTREE STUDIOS ENGLAND.