Screenplay by BRIAN CLEMENS   Directed by CYRIL FRANKEL     Three men find themselves alone in an atom test area, with the bomb due to go off at any moment. And if it does, it will devastate much of Australia. One of the men there is Richard Barrett, of Nemesis...     “Call it a hunch if you like. A guess, a wild crazy guess—but I think I’ve stumbled on to something...something huge...and quite mad!”   This is the message received at Nemesis H.Q. from Richard Barrett (WILLIAM GAUNT), and the only guess is that it may have something to do with an atom bomb test which is to be carried out in Australia. Tremayne (ANTHONY NICHOLLS), the Nemesis boss, takes Craig Stirling (STUART DAMON) and Sharron Macready (ALEXANDRA BASTEDO) with him to Australia to observe the test.   Richard, meanwhile, has lost his memory after cracking his head against a rock while trying to detain two men, Joss (MICHAEL GOUGH) and Aston (BILL CUMMINGS). They escape in a helicopter, and Richard wanders around dazedly until he comes to a deserted building proclaiming that it is “Joe’s Place.” He is joined by a man named Banner (JACK McGOWRAN), a swagman prospector of the old school and very much of an eccentric—the one man to slip the cordon when everyone else was told to leave the area. A new-fangled contraption just outside Joe’s Place is the reason, but Banner doesn’t believe it’s true that this is an atom bomb.   They are right in the detonation area, but they are not entirely alone. The helicopter has crashed and Joss is in the area as well.   Back at base, preparations go ahead for the test. Both Craig and Sharron are worried. Their intuition tells them that Richard is in danger, but a request to postpone the test is rejected.   Suddenly, after an accident in which he nearly loses his life, Richard regains his memory. The full horror of the situation is clear. Now he knows why he is here and what Joss and his companion were planning to do. The bomb to be exploded is “clean” and the effect of the explosion carefully calculated. But Joss has added a “dirty” bomb. Both will go up together, and the explosion will devastate vast areas of Australia, including Sydney.   Time is running short, and Richard lacks the technical knowledge to defuse the bomb. To make matters worse, Joss appears on the scene. Only the mysterious powers granted to the Champions can help now, and they come in subliminal flashes from Craig to Richard in a race against time...     AN PRODUCTION   Series created by Monty Berman and Dennis Spooner   © Copyright Incorporated Television Co. Ltd. MCMLXVII     Stuart Damon   Alexandra Bastedo   William Gaunt   Anthony Nicholls     Craig Stirling   Sharron Macready   Richard Barrett   Tremayne     Jack MacGowran   Grant Taylor   Michael Gough   Bill Cummings     Banner   General Winters   Joss   Aston     Director of photography   Art director   Editor   Post-production supervisor     Frank Watts   Charles Bishop   Derek Hyde-Chambers   Philip Aizlewood     Production manager   Musical director   Theme composed by   Casting   Stunt Arranger     Malcolm Chistopher   Edwin Astley   Tony Hatch   Anthony Arnell   Frank Maher     Sound editor   Sound recordists     Music editor   Associate art director   Set dresser   Construction manager     Roy Lafbery   Len Abbott Claude Hitchcock   Alan Willis   John Graysmark   Brian Rider   Bill Greene     Second unit director   Second unit cameraman   Camera operator   Assistant director   Continuity   Special effects     Ray Austin   Harry Gillam   John Winbolt   Colin Lord   Elizabeth Wilcox   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.