Montana Territory, 1881: Ranch hand Diehl Brett is coming home after four fruitless months chasing after the man he believes murdered his best friend, David Stiles. Elusive and taunting, the supposed killer, whom Diehl knows only by the name "Donovan," sometimes seems to be more than one man. And perhaps he is. Inevitably, Diehl faces the anger of his employer, Miss Cassie Stiles, sister of the slain man, and now alone to see to the precarious survival...