A historian arrives in Wind River country convinced that the memoirs of 19th century Shoshone heroine Sacajawea are stashed somewhere on the Wind River reservation. She believes that Sacajawea survived the Lewis and Clark expedition and returned to the Shoshones where she lived out her life. And when the historian turns up missing, Father John O’Malley and Wind River attorney Vickie Holden become convinced that, if the memoirs truly do exist, then someone has stolen the memoirs and may have dispatched the historian, permanently.