Following his wife's death, Rodney Stockton lost his fortune. His daughters faced poverty and were being ostracized by Philadelphia's elite society—he had to do something for them, insisting Quinn, his youngest daughter, promise to take her sisters to Colorado and find his brother. Riding the stagecoach to Tornado, Colorado, Quinn wonders if she made a mistake when she kept her promise to their father. Then she meets Ashe Montgomery, a man whose very presence stirs her in ways she's never before experienced. He's a US Marshall sent to Tornado as acting sheriff to solve a rash of mysterious stage robberies. Ashe enlists the help of his brothers, Beck and Cal. Involved with a beautiful widow, Ashe still has a hard time keeping his mind on his job when he encounters Quinn. She's the first woman to intrigue him since his fiancé left him standing at the altar. But things are never simple...