During the civil war, ordinary individuals who wanted to aid the war effort acted as spies. In a chauvinistic society, women were rarely noticed or seen as suspicious, so they took advantage of this and used them as spies.
The story of Beowulf is the eternal story of good versus evil, a theme that is still relevant to modern life. Grendel is the descendant of Cain, the evil son of Adam and Eve who slew his brother, Abel.