sentences:  When he was tried for Miss Lawes' murder, he was described as a "premier-league danger to the public" and a "sex-fuelled psychopath".His later appeal to the House of Lords, on the grounds that his status as police informer was not divulged to his defense team, was declined.Going to court, the family of Marcia Lawes successfully petitioned to sue the Metropolitan Police and Home Office on the grounds that, by allowing Denton to be an informer, police had acted unlawfully in permitting a man with a violent criminal record to remain free by endangering the public, the first lawsuit to be brought against the Home Office and London police officials.