Her work is deeply influenced by
Norse mythology, and set in a fantasy world with a similar climate and geography as the
Scandinavia of Norse myths. While Norse myths influenced fantasy, including authors like
Tolkien and
Lewis, Boyer's works followed them more closely than other writers. Her stories are characterized by elements like
light and dark elves,
dwarves,
trolls,
sorcerers,
ley lines,
burial mounds, and
wizards. She follows the Norse versions of these elements closely without much deviation. Her early books are dominated by the theme of the heroic quest. == Criticism ==