When a bank robber takes her husband's life, Jessamine Satterly takes over the operation of Brimstone's bank while dreaming of the day she can avenge her husband's death. Posing as a bank examiner, handsome Pinkerton detective Nick Devilbiss arrives in Brimstone—and works his way into Jess's life. Nick needs her unwitting help to track down his brother, the very man who shot her husband. When the bank is robbed again by the same outlaw gang, Jess's aunt is taken hostage. So, Jess saddles up to track them down once and for all. The only man in town brave enough to join her is Nick. Alone under the hot desert sun, their attraction bursts into a blaze of white-hot passion. But with danger lurking over the horizon, a showdown between duty and desire is about to begin...