The Lydian king, Candaules, had arranged for his general, Gyges, to view his wife, Nyssia, as she undressed. The furious queen offered Gyges the choice of being executed or murdering her husband. Gyges chose the latter, and went on to marry her.Etty here subverts the language of neo-classical history painting. Instead of improving themes, Etty uses it for an erotic subject of voyeurism and vengeance. He emphasises colour and texture rather than outline, and treats physical beauty as the object of lust and deception. His picture typified the Romantic challenge to moral and pictorial conventions.