By 1803 Napoleon was acting more and more royally - holding court, more state ceremonies, formal etiquette - the Legion of Honour was introduced 19 May 1802, there were rumours that a nobility was to be re-established as Napoleon allowed emigres to return. In 1804 a series of disasters, royalist plots and counter-plots culminated in the affair of the Duc d'Enghien, alleged to be plotting to overthrow Napoleon, he was kidnapped on Napoleon's orders on neutral territory, tried, and on inadequate evidence, found guilty of conspiracy. There was time between the end of the trial and the execution which amounted to judicial murder, justified by Napoleon on the Corsican laws of vendetta to kill an enemy who threatened his personal safety