 John III was to be killed during a swords dance performed by Scottish mercenaries at the party which was to be given in October that year before the Scottish mercenaries departure to the Baltic.After the assassination, Duke Charles was to be placed upon the throne.Charles de Mornay, who had previously been the favorite of Eric XIV, promised that he knew the location of Eric's alleged hidden gold reserve, which he would reveal after the coup in exchange for better conditions for Eric in prison.