"Beowulf: Dragonslayer" by Rosemary Sutcliff

I didn't grow up knowing the story of Beowulf.  I'd heard the name and knew it was some kind of Norse legend or something, but my first real contact with it was going to see The Thirteenth Warrior (1999) with my college bestie.  She told me it was a retelling of Beowulf, and that intrigued me because I loved the movie, but I was busy with reading-heavy college courses and simply didn't have time to find and read any versions of the myth.  Plus, based on how things go in the movie, I wasn't sure ...