An intimate of the Burr conspiracy, the condemned and hounded John Tylor signs on as boatman with Manuel Lisa's expedition. But the river is now contested as the British, Spanish, and other fur companies prepare to break Lisa's hold. As the expedition battles its way up the violent river, Fenway McKeever lurks in Tylor's shadow. Not only is the half-mad McKeever paid to kill Tylor, but he's convinced himself that by destroying Lisa's expedition, he can sell his services to the highest bidder.--Provided by Amazon.com.