Everything about the rich stranger is a mystery: the massive, isolated ranch in the remote Black Hills of Wyoming, the women who live with him, the secret philanthropies, the private airstrip, the sudden disappearances. And especially the persistent rumors that the man’s wealth comes from killing people. Joe Pickett, still officially a game warden but now mostly a troubleshooter for the governor, is assigned to find out the truth. But he finds out a lot more than he bargained for. There are two other men living up at that ranch. One is a stone-cold killer who takes an instant dislike to Joe. He doesn’t frighten Joe at all.

懷俄明州布拉克山那富有的陌生人一切成謎：寬闊偏僻的牧場、與他同居的女人、神秘的慈善機構、小型私人機場、離奇的失蹤案。其中，男子的財富是謀命而來的傳聞更是甚囂塵上。身為一名野生保護員，喬‧皮克特亦是政府信賴的糾紛調停專家，接受指派調查此案。但是，喬發現這宗案件遠超出他的意料。在布拉克山的牧場上，住著另外兩名男子。其中一名冷酷的殺手，第一眼就厭惡喬，但喬對他毫無畏懼！