Orpheus was a guy from ancient Greek legend who descended into the Underworld to rescue his dead wife Eurydice. He would have got away with it too, if not for the typical tragic ending of all such Greek myths, in which, after being instructed by Hades and Persephone not to look back to make sure his beloved Eurydice was indeed following him back to the mortal realm, he succumbed to the temptation to look and check.

Pretty petty of the king and queen of the Underworld, if you ask me.