On 9th January 1993 Jean-Claude Romand orchestrated a horrifying chain of events which exposed a shocking double life, a history of lies and a breath-taking capacity for deceit. The Adversary dissects the choices and actions of Romand which led to the brutal murders of his wife, children and parents and the attempted murder of his mistress, the impact of his deception on those around him and his sensational trial. Carrère is as integral a part of this story as Romand, his coverage of the trial and correspondence with him whilst in prison form a significant part of the story as do his feelings and response to Romand's justification for his actions.