Dax Keller made a promise to protect his best friend’s sister and he was determined not to let Griff down. When witnesses in a human trafficking case start dying, Rebecca Danes is suddenly moved up the list to star witness, and Dax intends to keep her safe from the hit man sent to silence her. However, he and Rebecca have a rocky history and she is not going to listen to him, no matter how much he revs her motor. Irresistible force, meet immovable object.