Susan Cooper
1) Ghost Hawk
Author
Description
At the end of a winter-long journey into manhood, Little Hawk returns to find his village decimated by a white man's plague and soon, despite a fresh start, Little Hawk dies violently but his spirit remains trapped, seeing how his world changes.
2) The seeker
Description
During Christmas break from school, a seemingly typical teenager discovers that he is anything but ordinary. As the seventh son of a seventh son, Will Stanton is The Seeker - a chosen warrior destined to restore the delicate earthly balance between Light and Dark. Guided by ancient protectors of the Light, young Will must travel through time to gather the hidden signs that hold the ultimate power to protect the world.