Harriet Ryegate, the proper daughter of Massachusetts Puritans, is the first white woman to go far into the wilderness beyond the upper Missouri. With her husband, a Baptist minister, she seeks to convert the Blackfoot Indians to Christianity. But it is the Ryegates who are changed by their "journey into strangeness." Marcus Ryegate returns to Massachusetts obsessed by a beautiful Indian woman. For sermonizing about her, he pays a heavy price. Harriet,...