When Caligula’s favorite sister, Drusilla, suddenly died in 38 CE, he couldn’t cope. He made her a god, to be worshipped as Panthea, the “All-Goddess,” or “all-embracing deity”, Divae Drusillae Sorori Caius Augusti Germanici. One senator declared under oath that he had witnessed how Drusilla rose to heaven.

And now Caligula needed to find a new successor.