Employing an authentic map from 1805 and decades of research into Cheyenne culture, Karl H. Schlesier pens a tale as remarkable for its historical detail as for the intensity of its storytelling.Whirlwind, the twin brother of Stone, disappears during a raid into northeastern New Spain. So Stone brings together Cheyenne, Kiowa, and Gataka warriors to go after his missing brother-but there are many things between earth and sky that oppose his quest.