Richard Bransome, a metallurgist working in defence, once committed a vicious crime. Twenty years later the crime comes to light and he must discover the truth. But is he a suspect? And how much do the police know? Richard Bransome worked in the government's most vital scientific laboratory, under the ultimate security. Nothing - living of inanimate - could crack the security barriers that guarded Bransome and his fellow workers. Nothing known to man...But something was making key scientists give up their lives' careers, sometimes just to drift away, other times to die. Then Bransome began to remember a past in which he had been a cold-blooded murderer! To discover the truth about himself, he set out on a solitary mission that would lead him against the most incredible enemy ever known to the people of Earth!