 Translated by J. R. R. Tolkien from 1920 to 1926, it was edited by Tolkien's son Christopher and published posthumously in May 2014 by HarperCollins.In the poem, Beowulf, a hero of the Geats in Scandinavia, comes to the aid of Hroðgar, the king of the Danes, whose mead hall Heorot has been under attack by a monster known as Grendel.After Beowulf kills him, Grendel's mother attacks the hall and is then also defeated.