El Diablo strikes no fear in the heart of Dusty O'Donovan. The accomplished rider knows life holds much greater fears than a feisty stud bull. Diablo's owner, Zach McCray, is offering half a million dollars to anyone who can stay on him for a full eight seconds. That purse would go a long way helping rebuild Dusty and her brother's nearly bankrupt ranch.

Let a woman ride his bull? Not likely. Still, the headstrong Dusty intrigues Zach. Her father worked on the McCray ranch years ago, and Zach remembers her as a little girl when he was a cocky teen. Times change, and now she's a beautiful...