None can stop the evil ways of Grendel until the great warrior, Beowulf, defeats him with his bare hands. All rejoice that peace has been restored, but who is the creature living beneath the dark dank waters waiting for revenge?
Books can be attributed to "Unknown" when the author or editor (as applicable) is not known and cannot be discovered. If at all possible, list at least one actual author or editor for a book instead of using "Unknown".
Books whose authorship is purposefully withheld should be attributed instead to Anonymous.